68692491072 has 112 divisors (see below), whose sum is σ = 202107596800. Its totient is φ = 22878858240.

The previous prime is 68692491029. The next prime is 68692491083. The reversal of 68692491072 is 27019429686.

68692491072 is a `hidden beast` number, since 6 + 86 + 9 + 2 + 491 + 0 + 72 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 2194572 + ... + 2225652.

Almost surely, 2^68692491072 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68692491072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101053798400).

68692491072 is an abundant number, since it is smaller than the sum of its proper divisors (133415105728).

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

68692491072 is a wasteful number, since it uses less digits than its factorization.

68692491072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32381 (or 32365 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 54.

The spelling of 68692491072 in words is "sixty-eight billion, six hundred ninety-two million, four hundred ninety-one thousand, seventy-two".