68245840692 has 72 divisors (see below), whose sum is σ = 178134308352. Its totient is φ = 22007476800.

The previous prime is 68245840673. The next prime is 68245840703. The reversal of 68245840692 is 29604854286.

68245840692 is a `hidden beast` number, since 68 + 2 + 458 + 40 + 6 + 92 = 666.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4095217 + ... + 4111847.

It is an arithmetic number, because the mean of its divisors is an integer number (2474087616).

Almost surely, 2^68245840692 is an apocalyptic number.

68245840692 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

68245840692 is an abundant number, since it is smaller than the sum of its proper divisors (109888467660).

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

68245840692 is a wasteful number, since it uses less digits than its factorization.

68245840692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20349 (or 20344 counting only the distinct ones).

The product of its (nonzero) digits is 6635520, while the sum is 54.

The spelling of 68245840692 in words is "sixty-eight billion, two hundred forty-five million, eight hundred forty thousand, six hundred ninety-two".