55438768502 has 64 divisors (see below), whose sum is σ = 93182552064. Its totient is φ = 24574112640.

The previous prime is 55438768487. The next prime is 55438768507. The reversal of 55438768502 is 20586783455.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55438768507) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 23987927 + ... + 23990237.

It is an arithmetic number, because the mean of its divisors is an integer number (1455977376).

Almost surely, 2^55438768502 is an apocalyptic number.

55438768502 is a deficient number, since it is larger than the sum of its proper divisors (37743783562).

55438768502 is a wasteful number, since it uses less digits than its factorization.

55438768502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2733.

The product of its (nonzero) digits is 8064000, while the sum is 53.

The spelling of 55438768502 in words is "fifty-five billion, four hundred thirty-eight million, seven hundred sixty-eight thousand, five hundred two".