55427858280 has 128 divisors (see below), whose sum is σ = 189056419200. Its totient is φ = 14437011456.

The previous prime is 55427858273. The next prime is 55427858293. The reversal of 55427858280 is 8285872455.

55427858280 is a `hidden beast` number, since 5 + 54 + 2 + 7 + 8 + 582 + 8 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 550329 + ... + 643208.

It is an arithmetic number, because the mean of its divisors is an integer number (1477003275).

Almost surely, 2^55427858280 is an apocalyptic number.

It is an amenable number.

55427858280 is an abundant number, since it is smaller than the sum of its proper divisors (133628560920).

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

55427858280 is a wasteful number, since it uses less digits than its factorization.

55427858280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1193600 (or 1193590 counting only the distinct ones).

The product of its (nonzero) digits is 7168000, while the sum is 54.

The spelling of 55427858280 in words is "fifty-five billion, four hundred twenty-seven million, eight hundred fifty-eight thousand, two hundred eighty".