52820120664 has 48 divisors (see below), whose sum is σ = 143080774200. Its totient is φ = 17603472384.

The previous prime is 52820120527. The next prime is 52820120687. The reversal of 52820120664 is 46602102825.

It is a happy number.

52820120664 is a `hidden beast` number, since 528 + 2 + 0 + 120 + 6 + 6 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 344632 + ... + 473720.

Almost surely, 2^52820120664 is an apocalyptic number.

It is an amenable number.

52820120664 is an abundant number, since it is smaller than the sum of its proper divisors (90260653536).

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

52820120664 is a wasteful number, since it uses less digits than its factorization.

52820120664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134784 (or 134777 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The spelling of 52820120664 in words is "fifty-two billion, eight hundred twenty million, one hundred twenty thousand, six hundred sixty-four".