64956625420 has 48 divisors (see below), whose sum is σ = 139344766848. Its totient is φ = 25423706880.

The previous prime is 64956625339. The next prime is 64956625463. The reversal of 64956625420 is 2452665946.

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, 7565530 + ... + 7574110.

It is an arithmetic number, because the mean of its divisors is an integer number (2903015976).

Almost surely, 2^64956625420 is an apocalyptic number.

It is an amenable number.

64956625420 is an abundant number, since it is smaller than the sum of its proper divisors (74388141428).

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

64956625420 is a wasteful number, since it uses less digits than its factorization.

64956625420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16690 (or 16688 counting only the distinct ones).

The product of its (nonzero) digits is 3110400, while the sum is 49.

The spelling of 64956625420 in words is "sixty-four billion, nine hundred fifty-six million, six hundred twenty-five thousand, four hundred twenty".