65660010016 has 24 divisors (see below), whose sum is σ = 131038945884. Its totient is φ = 32380277760.

The previous prime is 65660009939. The next prime is 65660010131. The reversal of 65660010016 is 61001006656.

It can be written as a sum of positive squares in 2 ways, for example, as 65636390416 + 23619600 = 256196^2 + 4860^2 .

It is a super-2 number, since 2×65660010016² (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 65660010016.

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, 14051605 + ... + 14056276.

Almost surely, 2^65660010016 is an apocalyptic number.

It is an amenable number.

65660010016 is a deficient number, since it is larger than the sum of its proper divisors (65378935868).

65660010016 is a wasteful number, since it uses less digits than its factorization.

65660010016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28107964 (or 28107956 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 31.

The spelling of 65660010016 in words is "sixty-five billion, six hundred sixty million, ten thousand, sixteen".