65656650660 has 24 divisors (see below), whose sum is σ = 183838622016. Its totient is φ = 17508440160.

The previous prime is 65656650659. The next prime is 65656650671. The reversal of 65656650660 is 6605665656.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 547138696 + ... + 547138815.

It is an arithmetic number, because the mean of its divisors is an integer number (7659942584).

Almost surely, 2^65656650660 is an apocalyptic number.

65656650660 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

65656650660 is an abundant number, since it is smaller than the sum of its proper divisors (118181971356).

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

65656650660 is a wasteful number, since it uses less digits than its factorization.

65656650660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1094277523 (or 1094277521 counting only the distinct ones).

The product of its (nonzero) digits is 5832000, while the sum is 51.

The spelling of 65656650660 in words is "sixty-five billion, six hundred fifty-six million, six hundred fifty thousand, six hundred sixty".