68291256940 has 12 divisors (see below), whose sum is σ = 143411639616. Its totient is φ = 27316502768.

The previous prime is 68291256931. The next prime is 68291256967. The reversal of 68291256940 is 4965219286.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1707281404 + ... + 1707281443.

It is an arithmetic number, because the mean of its divisors is an integer number (11950969968).

Almost surely, 2^68291256940 is an apocalyptic number.

It is an amenable number.

68291256940 is an abundant number, since it is smaller than the sum of its proper divisors (75120382676).

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

68291256940 is a wasteful number, since it uses less digits than its factorization.

68291256940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3414562856 (or 3414562854 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 52.

The spelling of 68291256940 in words is "sixty-eight billion, two hundred ninety-one million, two hundred fifty-six thousand, nine hundred forty".