55653348978 has 24 divisors (see below), whose sum is σ = 120586663548. Its totient is φ = 18550438272.

The previous prime is 55653348943. The next prime is 55653349043. The reversal of 55653348978 is 87984335655.

55653348978 is a `hidden beast` number, since 5 + 5 + 6 + 533 + 4 + 8 + 97 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 55614373929 + 38975049 = 235827^2 + 6243^2 .

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, 802950 + ... + 869502.

Almost surely, 2^55653348978 is an apocalyptic number.

55653348978 is an abundant number, since it is smaller than the sum of its proper divisors (64933314570).

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

55653348978 is a wasteful number, since it uses less digits than its factorization.

55653348978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113018 (or 113015 counting only the distinct ones).

The product of its digits is 108864000, while the sum is 63.

The spelling of 55653348978 in words is "fifty-five billion, six hundred fifty-three million, three hundred forty-eight thousand, nine hundred seventy-eight".