52800165640 has 32 divisors (see below), whose sum is σ = 118960332480. Its totient is φ = 21091628992.

The previous prime is 52800165631. The next prime is 52800165697. The reversal of 52800165640 is 4656100825.

It is a super-2 number, since 2×52800165640² (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 52800165640.

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, 858574 + ... + 918013.

It is an arithmetic number, because the mean of its divisors is an integer number (3717510390).

Almost surely, 2^52800165640 is an apocalyptic number.

It is an amenable number.

52800165640 is an abundant number, since it is smaller than the sum of its proper divisors (66160166840).

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

52800165640 is a wasteful number, since it uses less digits than its factorization.

52800165640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1777341 (or 1777337 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 37.

The spelling of 52800165640 in words is "fifty-two billion, eight hundred million, one hundred sixty-five thousand, six hundred forty".