55500561105 has 64 divisors (see below), whose sum is σ = 99607954176. Its totient is φ = 26151552000.

The previous prime is 55500561091. The next prime is 55500561133. The reversal of 55500561105 is 50116500555.

It is not a de Polignac number, because 55500561105 - 2⁵ = 55500561073 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5739975 + ... + 5749635.

It is an arithmetic number, because the mean of its divisors is an integer number (1556374284).

Almost surely, 2^55500561105 is an apocalyptic number.

55500561105 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

55500561105 is a deficient number, since it is larger than the sum of its proper divisors (44107393071).

55500561105 is a wasteful number, since it uses less digits than its factorization.

55500561105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10658.

The product of its (nonzero) digits is 18750, while the sum is 33.

It can be divided in two parts, 55500 and 561105, that added together give a triangular number (616605 = T₁₁₁₀).

The spelling of 55500561105 in words is "fifty-five billion, five hundred million, five hundred sixty-one thousand, one hundred five".