55868877428 has 36 divisors (see below), whose sum is σ = 122481775332. Its totient is φ = 22101972480.

The previous prime is 55868877359. The next prime is 55868877433. The reversal of 55868877428 is 82477886855.

It can be written as a sum of positive squares in 2 ways, for example, as 8035688164 + 47833189264 = 89642^2 + 218708^2 .

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, 10960733 + ... + 10965828.

It is an arithmetic number, because the mean of its divisors is an integer number (3402271537).

Almost surely, 2^55868877428 is an apocalyptic number.

It is an amenable number.

55868877428 is an abundant number, since it is smaller than the sum of its proper divisors (66612897904).

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

55868877428 is a wasteful number, since it uses less digits than its factorization.

55868877428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21926592 (or 21926583 counting only the distinct ones).

The product of its digits is 240844800, while the sum is 68.

The spelling of 55868877428 in words is "fifty-five billion, eight hundred sixty-eight million, eight hundred seventy-seven thousand, four hundred twenty-eight".