55012520000 has 70 divisors (see below), whose sum is σ = 136413269718. Its totient is φ = 22004992000.

The previous prime is 55012519973. The next prime is 55012520083. The reversal of 55012520000 is 2521055.

It can be written as a sum of positive squares in 5 ways, for example, as 24563665984 + 30448854016 = 156728^2 + 174496^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 647657 + ... + 727656.

Almost surely, 2^55012520000 is an apocalyptic number.

55012520000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55012520000 is an abundant number, since it is smaller than the sum of its proper divisors (81400749718).

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

55012520000 is an equidigital number, since it uses as much as digits as its factorization.

55012520000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1375345 (or 1375320 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 20.

The spelling of 55012520000 in words is "fifty-five billion, twelve million, five hundred twenty thousand".