52816532665 has 16 divisors (see below), whose sum is σ = 68295528000. Its totient is φ = 38979940032.

The previous prime is 52816532621. The next prime is 52816532669. The reversal of 52816532665 is 56623561825.

It is a cyclic number.

It is not a de Polignac number, because 52816532665 - 2³¹ = 50669049017 is a prime.

It is a super-2 number, since 2×52816532665² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (52816532669) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 128695 + ... + 349564.

It is an arithmetic number, because the mean of its divisors is an integer number (4268470500).

Almost surely, 2^52816532665 is an apocalyptic number.

It is an amenable number.

52816532665 is a deficient number, since it is larger than the sum of its proper divisors (15478995335).

52816532665 is a wasteful number, since it uses less digits than its factorization.

52816532665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479976.

The product of its digits is 2592000, while the sum is 49.

The spelling of 52816532665 in words is "fifty-two billion, eight hundred sixteen million, five hundred thirty-two thousand, six hundred sixty-five".