65156056660 has 48 divisors (see below), whose sum is σ = 144520992000. Its totient is φ = 24606405504.

The previous prime is 65156056639. The next prime is 65156056709. The reversal of 65156056660 is 6665065156.

65156056660 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×65156056660² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 65156056660.

It is a congruent number.

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, 181260 + ... + 403939.

It is an arithmetic number, because the mean of its divisors is an integer number (3010854000).

Almost surely, 2^65156056660 is an apocalyptic number.

It is an amenable number.

65156056660 is an abundant number, since it is smaller than the sum of its proper divisors (79364935340).

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

65156056660 is a wasteful number, since it uses less digits than its factorization.

65156056660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 585520 (or 585518 counting only the distinct ones).

The product of its (nonzero) digits is 972000, while the sum is 46.

The spelling of 65156056660 in words is "sixty-five billion, one hundred fifty-six million, fifty-six thousand, six hundred sixty".