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68994651384 = 23326037158731
BaseRepresentation
bin100000001000001100…
…1101101010011111000
320121002100121102211200
41000100121231103320
52112300112321014
651410134454200
74661515601061
oct1002031552370
9217070542750
1068994651384
112729575584a
1211456204360
136677086b09
1434a72b5568
151bdc224a09
hex101066d4f8

68994651384 has 48 divisors (see below), whose sum is σ = 186892644120. Its totient is φ = 22994262720.

The previous prime is 68994651367. The next prime is 68994651391. The reversal of 68994651384 is 48315649986.

68994651384 is a `hidden beast` number, since 6 + 8 + 99 + 465 + 1 + 3 + 84 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 355299 + ... + 514029.

Almost surely, 268994651384 is an apocalyptic number.

It is an amenable number.

68994651384 is an abundant number, since it is smaller than the sum of its proper divisors (117897992736).

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

68994651384 is a wasteful number, since it uses less digits than its factorization.

68994651384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164780 (or 164773 counting only the distinct ones).

The product of its digits is 44789760, while the sum is 63.

The spelling of 68994651384 in words is "sixty-eight billion, nine hundred ninety-four million, six hundred fifty-one thousand, three hundred eighty-four".

Divisors: 1 2 3 4 6 8 9 12 18 24 36 72 6037 12074 18111 24148 36222 48296 54333 72444 108666 144888 158731 217332 317462 434664 476193 634924 952386 1269848 1428579 1904772 2857158 3809544 5714316 11428632 958259047 1916518094 2874777141 3833036188 5749554282 7666072376 8624331423 11499108564 17248662846 22998217128 34497325692 68994651384