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68227370861 = 1331169298687
BaseRepresentation
bin111111100010101010…
…110000111101101101
320112002212211112211112
4333202222300331231
52104212201331421
651202045201405
74633511040446
oct774252607555
9215085745745
1068227370861
1126a31632611
1211281260265
13658411b980
1434334262cd
151b94bb245b
hexfe2ab0f6d

68227370861 has 8 divisors (see below), whose sum is σ = 75845812224. Its totient is φ = 60947526960.

The previous prime is 68227370857. The next prime is 68227370873. The reversal of 68227370861 is 16807372286.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68227370861 - 22 = 68227370857 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68227370261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84648941 + ... + 84649746.

It is an arithmetic number, because the mean of its divisors is an integer number (9480726528).

Almost surely, 268227370861 is an apocalyptic number.

It is an amenable number.

68227370861 is a deficient number, since it is larger than the sum of its proper divisors (7618441363).

68227370861 is a wasteful number, since it uses less digits than its factorization.

68227370861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169298731.

The product of its (nonzero) digits is 1354752, while the sum is 50.

The spelling of 68227370861 in words is "sixty-eight billion, two hundred twenty-seven million, three hundred seventy thousand, eight hundred sixty-one".

Divisors: 1 13 31 403 169298687 2200882931 5248259297 68227370861