55187238312 has 96 divisors (see below), whose sum is σ = 165138367680. Its totient is φ = 16560867840.

The previous prime is 55187238269. The next prime is 55187238313. The reversal of 55187238312 is 21383278155.

55187238312 is a `hidden beast` number, since 5 + 518 + 72 + 38 + 31 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (55187238313) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 952014 + ... + 1008317.

It is an arithmetic number, because the mean of its divisors is an integer number (1720191330).

Almost surely, 2^55187238312 is an apocalyptic number.

It is an amenable number.

55187238312 is an abundant number, since it is smaller than the sum of its proper divisors (109951129368).

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

55187238312 is a wasteful number, since it uses less digits than its factorization.

55187238312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1960383 (or 1960376 counting only the distinct ones).

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

The spelling of 55187238312 in words is "fifty-five billion, one hundred eighty-seven million, two hundred thirty-eight thousand, three hundred twelve".