55508440000 has 140 divisors (see below), whose sum is σ = 148232194264. Its totient is φ = 20495232000.

The previous prime is 55508439991. The next prime is 55508440027. The reversal of 55508440000 is 4480555.

55508440000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×55508440000² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 466627 + ... + 573373.

Almost surely, 2^55508440000 is an apocalyptic number.

55508440000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55508440000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74116097132).

55508440000 is an abundant number, since it is smaller than the sum of its proper divisors (92723754264).

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

55508440000 is a wasteful number, since it uses less digits than its factorization.

55508440000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106792 (or 106767 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 31.

The spelling of 55508440000 in words is "fifty-five billion, five hundred eight million, four hundred forty thousand".