55437447500 has 30 divisors (see below), whose sum is σ = 121230615660. Its totient is φ = 22174978000.

The previous prime is 55437447487. The next prime is 55437447551. The reversal of 55437447500 is 574473455.

It is a happy number.

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, 11084990 + ... + 11089989.

It is an arithmetic number, because the mean of its divisors is an integer number (4041020522).

Almost surely, 2^55437447500 is an apocalyptic number.

55437447500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55437447500 is an abundant number, since it is smaller than the sum of its proper divisors (65793168160).

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

55437447500 is a wasteful number, since it uses less digits than its factorization.

55437447500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22175003 (or 22174986 counting only the distinct ones).

The product of its (nonzero) digits is 1176000, while the sum is 44.

The spelling of 55437447500 in words is "fifty-five billion, four hundred thirty-seven million, four hundred forty-seven thousand, five hundred".