55512132512 has 48 divisors (see below), whose sum is σ = 112955721984. Its totient is φ = 26827200000.

The previous prime is 55512132509. The next prime is 55512132521. The reversal of 55512132512 is 21523121555.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 770012 + ... + 839012.

It is an arithmetic number, because the mean of its divisors is an integer number (2353244208).

Almost surely, 2^55512132512 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55512132512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56477860992).

55512132512 is an abundant number, since it is smaller than the sum of its proper divisors (57443589472).

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

55512132512 is a wasteful number, since it uses less digits than its factorization.

55512132512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69853 (or 69845 counting only the distinct ones).

The product of its digits is 15000, while the sum is 32.

The spelling of 55512132512 in words is "fifty-five billion, five hundred twelve million, one hundred thirty-two thousand, five hundred twelve".