68640954296 has 24 divisors (see below), whose sum is σ = 129965560920. Its totient is φ = 33983544816.

The previous prime is 68640954293. The next prime is 68640954313. The reversal of 68640954296 is 69245904686.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68640954293) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7516085 + ... + 7525211.

It is an arithmetic number, because the mean of its divisors is an integer number (5415231705).

Almost surely, 2^68640954296 is an apocalyptic number.

It is an amenable number.

68640954296 is a deficient number, since it is larger than the sum of its proper divisors (61324606624).

68640954296 is an frugal number, since it uses more digits than its factorization.

68640954296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18363 (or 9232 counting only the distinct ones).

The product of its (nonzero) digits is 22394880, while the sum is 59.

The spelling of 68640954296 in words is "sixty-eight billion, six hundred forty million, nine hundred fifty-four thousand, two hundred ninety-six".