65916528819856 has 80 divisors (see below), whose sum is σ = 150341455656000. Its totient is φ = 27601858920960.

The previous prime is 65916528819793. The next prime is 65916528819863. The reversal of 65916528819856 is 65891882561956.

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, 27725695 + ... + 30009118.

It is an arithmetic number, because the mean of its divisors is an integer number (1879268195700).

Almost surely, 2^{65916528819856} is an apocalyptic number.

It is an amenable number.

65916528819856 is an abundant number, since it is smaller than the sum of its proper divisors (84424926836144).

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

65916528819856 is a wasteful number, since it uses less digits than its factorization.

65916528819856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57735344 (or 57735338 counting only the distinct ones).

The product of its digits is 2239488000, while the sum is 79.

The spelling of 65916528819856 in words is "sixty-five trillion, nine hundred sixteen billion, five hundred twenty-eight million, eight hundred nineteen thousand, eight hundred fifty-six".