55476139992 has 64 divisors (see below), whose sum is σ = 170695822080. Its totient is φ = 14631069312.

The previous prime is 55476139987. The next prime is 55476140023. The reversal of 55476139992 is 29993167455.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12698398 + ... + 12702765.

It is an arithmetic number, because the mean of its divisors is an integer number (2667122220).

Almost surely, 2^55476139992 is an apocalyptic number.

55476139992 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

55476139992 is an abundant number, since it is smaller than the sum of its proper divisors (115219682088).

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

55476139992 is a wasteful number, since it uses less digits than its factorization.

55476139992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25401192 (or 25401188 counting only the distinct ones).

The product of its digits is 18370800, while the sum is 60.

The spelling of 55476139992 in words is "fifty-five billion, four hundred seventy-six million, one hundred thirty-nine thousand, nine hundred ninety-two".