55563436555 has 24 divisors (see below), whose sum is σ = 73306674000. Its totient is φ = 40399824960.

The previous prime is 55563436553. The next prime is 55563436561.

55563436555 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 55563436555 - 2¹ = 55563436553 is a prime.

It is a hoax number, since the sum of its digits (52) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (55563436553) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3203296 + ... + 3220594.

It is an arithmetic number, because the mean of its divisors is an integer number (3054444750).

Almost surely, 2^55563436555 is an apocalyptic number.

55563436555 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

55563436555 is a deficient number, since it is larger than the sum of its proper divisors (17743237445).

55563436555 is a wasteful number, since it uses less digits than its factorization.

55563436555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22635 (or 22624 counting only the distinct ones).

The product of its digits is 20250000, while the sum is 52.

The spelling of 55563436555 in words is "fifty-five billion, five hundred sixty-three million, four hundred thirty-six thousand, five hundred fifty-five".