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68901198672 = 24331263176063
BaseRepresentation
bin100000000101011010…
…1001101101101010000
320120211211202112211010
41000022311031231100
52112102201324142
651352555450520
74656302345145
oct1001265155520
9216754675733
1068901198672
1127247a263a9
121142aa56a40
1366608c6457
143498b0a3cc
151bd3e14e9c
hex100ad4db50

68901198672 has 80 divisors (see below), whose sum is σ = 184436195328. Its totient is φ = 22141557120.

The previous prime is 68901198649. The next prime is 68901198733. The reversal of 68901198672 is 27689110986.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 303313 + ... + 479375.

Almost surely, 268901198672 is an apocalyptic number.

68901198672 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68901198672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92218097664).

68901198672 is an abundant number, since it is smaller than the sum of its proper divisors (115534996656).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68901198672 is a wasteful number, since it uses less digits than its factorization.

68901198672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176368 (or 176362 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 57.

The spelling of 68901198672 in words is "sixty-eight billion, nine hundred one million, one hundred ninety-eight thousand, six hundred seventy-two".

Divisors: 1 2 3 4 6 8 12 16 24 31 48 62 93 124 186 248 263 372 496 526 744 789 1052 1488 1578 2104 3156 4208 6312 8153 12624 16306 24459 32612 48918 65224 97836 130448 176063 195672 352126 391344 528189 704252 1056378 1408504 2112756 2817008 4225512 5457953 8451024 10915906 16373859 21831812 32747718 43663624 46304569 65495436 87327248 92609138 130990872 138913707 185218276 261981744 277827414 370436552 555654828 740873104 1111309656 1435441639 2222619312 2870883278 4306324917 5741766556 8612649834 11483533112 17225299668 22967066224 34450599336 68901198672