55561011000 has 128 divisors (see below), whose sum is σ = 189109589760. Its totient is φ = 13469328000.

The previous prime is 55561010963. The next prime is 55561011017. The reversal of 55561011000 is 11016555.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 808834 + ... + 874833.

It is an arithmetic number, because the mean of its divisors is an integer number (1477418670).

Almost surely, 2^55561011000 is an apocalyptic number.

55561011000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55561011000 is an abundant number, since it is smaller than the sum of its proper divisors (133548578760).

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

55561011000 is a wasteful number, since it uses less digits than its factorization.

55561011000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1683702 (or 1683688 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 24.

Adding to 55561011000 its reverse (11016555), we get a palindrome (55572027555).

The spelling of 55561011000 in words is "fifty-five billion, five hundred sixty-one million, eleven thousand".