52886661921 has 24 divisors (see below), whose sum is σ = 82092744864. Its totient is φ = 32688501120.

The previous prime is 52886661859. The next prime is 52886661929. The reversal of 52886661921 is 12916668825.

It is not a de Polignac number, because 52886661921 - 2³³ = 44296727329 is a prime.

It is not an unprimeable number, because it can be changed into a prime (52886661929) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2569335 + ... + 2589836.

It is an arithmetic number, because the mean of its divisors is an integer number (3420531036).

Almost surely, 2^52886661921 is an apocalyptic number.

52886661921 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

52886661921 is a deficient number, since it is larger than the sum of its proper divisors (29206082943).

52886661921 is a wasteful number, since it uses less digits than its factorization.

52886661921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5159261 (or 5159258 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 54.

The spelling of 52886661921 in words is "fifty-two billion, eight hundred eighty-six million, six hundred sixty-one thousand, nine hundred twenty-one".