55186270380 has 120 divisors (see below), whose sum is σ = 180648512352. Its totient is φ = 14076488448.

The previous prime is 55186270367. The next prime is 55186270421. The reversal of 55186270380 is 8307268155.

55186270380 is a `hidden beast` number, since 5 + 5 + 18 + 627 + 0 + 3 + 8 + 0 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 703297 + ... + 777816.

Almost surely, 2^55186270380 is an apocalyptic number.

It is an amenable number.

55186270380 is an abundant number, since it is smaller than the sum of its proper divisors (125462241972).

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

55186270380 is a wasteful number, since it uses less digits than its factorization.

55186270380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1481157 (or 1481146 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 45.

The spelling of 55186270380 in words is "fifty-five billion, one hundred eighty-six million, two hundred seventy thousand, three hundred eighty".