55531444413555 has 128 divisors (see below), whose sum is σ = 110623513052160. Its totient is φ = 26192998149120.

The previous prime is 55531444413493. The next prime is 55531444413619.

55531444413555 is a `hidden beast` number, since 5 + 5 + 5 + 3 + 1 + 4 + 44 + 41 + 3 + 555 = 666.

55531444413555 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 55531444413555 - 2¹⁰ = 55531444412531 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 416251572 + ... + 416384958.

It is an arithmetic number, because the mean of its divisors is an integer number (864246195720).

Almost surely, 2^{55531444413555} is an apocalyptic number.

55531444413555 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

55531444413555 is a deficient number, since it is larger than the sum of its proper divisors (55092068638605).

55531444413555 is a wasteful number, since it uses less digits than its factorization.

55531444413555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141026 (or 141020 counting only the distinct ones).

The product of its digits is 36000000, while the sum is 54.

It can be divided in two parts, 5553144 and 4413555, that added together give a palindrome (9966699).

The spelling of 55531444413555 in words is "fifty-five trillion, five hundred thirty-one billion, four hundred forty-four million, four hundred thirteen thousand, five hundred fifty-five".