65914421504 has 36 divisors (see below), whose sum is σ = 139310866044. Its totient is φ = 31018549248.

The previous prime is 65914421483. The next prime is 65914421519. The reversal of 65914421504 is 40512441956.

It can be written as a sum of positive squares in 2 ways, for example, as 42786095104 + 23128326400 = 206848^2 + 152080^2 .

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, 7568537 + ... + 7577240.

It is an arithmetic number, because the mean of its divisors is an integer number (3869746279).

Almost surely, 2^65914421504 is an apocalyptic number.

65914421504 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

65914421504 is an abundant number, since it is smaller than the sum of its proper divisors (73396444540).

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

65914421504 is a wasteful number, since it uses less digits than its factorization.

65914421504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15145810 (or 15145796 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 41.

The spelling of 65914421504 in words is "sixty-five billion, nine hundred fourteen million, four hundred twenty-one thousand, five hundred four".