55540634563 has 16 divisors (see below), whose sum is σ = 58606239744. Its totient is φ = 52556770080.

The previous prime is 55540634551. The next prime is 55540634579. The reversal of 55540634563 is 36543604555.

It is a de Polignac number, because none of the positive numbers 2^k-55540634563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55540634063) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1610406 + ... + 1644532.

It is an arithmetic number, because the mean of its divisors is an integer number (3662889984).

Almost surely, 2^55540634563 is an apocalyptic number.

55540634563 is a deficient number, since it is larger than the sum of its proper divisors (3065605181).

55540634563 is a wasteful number, since it uses less digits than its factorization.

55540634563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35322.

The product of its (nonzero) digits is 3240000, while the sum is 46.

The spelling of 55540634563 in words is "fifty-five billion, five hundred forty million, six hundred thirty-four thousand, five hundred sixty-three".