55440561200 has 60 divisors (see below), whose sum is σ = 137492622528. Its totient is φ = 21460857600.

The previous prime is 55440561139. The next prime is 55440561203. The reversal of 55440561200 is 216504455.

It is not an unprimeable number, because it can be changed into a prime (55440561203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2223107 + ... + 2247906.

Almost surely, 2^55440561200 is an apocalyptic number.

55440561200 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55440561200 is an abundant number, since it is smaller than the sum of its proper divisors (82052061328).

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

55440561200 is a wasteful number, since it uses less digits than its factorization.

55440561200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4471062 (or 4471051 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 32.

The spelling of 55440561200 in words is "fifty-five billion, four hundred forty million, five hundred sixty-one thousand, two hundred".