65915970738 has 32 divisors (see below), whose sum is σ = 132162181632. Its totient is φ = 21917001600.

The previous prime is 65915970727. The next prime is 65915970773. The reversal of 65915970738 is 83707951956.

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, 6412543 + ... + 6422813.

It is an arithmetic number, because the mean of its divisors is an integer number (4130068176).

Almost surely, 2^65915970738 is an apocalyptic number.

65915970738 is an abundant number, since it is smaller than the sum of its proper divisors (66246210894).

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

65915970738 is a wasteful number, since it uses less digits than its factorization.

65915970738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12850.

The product of its (nonzero) digits is 14288400, while the sum is 60.

The spelling of 65915970738 in words is "sixty-five billion, nine hundred fifteen million, nine hundred seventy thousand, seven hundred thirty-eight".