51665160552 has 32 divisors (see below), whose sum is σ = 129218263200. Its totient is φ = 17214338624.

The previous prime is 51665160551. The next prime is 51665160553. The reversal of 51665160552 is 25506156615.

51665160552 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (51665160551) and next prime (51665160553).

It is not an unprimeable number, because it can be changed into a prime (51665160551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 404043 + ... + 516314.

It is an arithmetic number, because the mean of its divisors is an integer number (4038070725).

Almost surely, 2^51665160552 is an apocalyptic number.

It is an amenable number.

51665160552 is an abundant number, since it is smaller than the sum of its proper divisors (77553102648).

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

51665160552 is a wasteful number, since it uses less digits than its factorization.

51665160552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 922705 (or 922701 counting only the distinct ones).

The product of its (nonzero) digits is 270000, while the sum is 42.

The spelling of 51665160552 in words is "fifty-one billion, six hundred sixty-five million, one hundred sixty thousand, five hundred fifty-two".