68866683740 has 24 divisors (see below), whose sum is σ = 146024118240. Its totient is φ = 27279229248.

The previous prime is 68866683619. The next prime is 68866683761. The reversal of 68866683740 is 4738666886.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16713155 + ... + 16717274.

It is an arithmetic number, because the mean of its divisors is an integer number (6084338260).

Almost surely, 2^68866683740 is an apocalyptic number.

It is an amenable number.

68866683740 is an abundant number, since it is smaller than the sum of its proper divisors (77157434500).

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

68866683740 is a wasteful number, since it uses less digits than its factorization.

68866683740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33430541 (or 33430539 counting only the distinct ones).

The product of its (nonzero) digits is 55738368, while the sum is 62.

The spelling of 68866683740 in words is "sixty-eight billion, eight hundred sixty-six million, six hundred eighty-three thousand, seven hundred forty".