55744415999 has 4 divisors (see below), whose sum is σ = 55747581864. Its totient is φ = 55741250136.

The previous prime is 55744415933. The next prime is 55744416037. The reversal of 55744415999 is 99951444755.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55744415999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55744415099) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1556372 + ... + 1591785.

It is an arithmetic number, because the mean of its divisors is an integer number (13936895466).

Almost surely, 2^55744415999 is an apocalyptic number.

55744415999 is a deficient number, since it is larger than the sum of its proper divisors (3165865).

55744415999 is a wasteful number, since it uses less digits than its factorization.

55744415999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3165864.

The product of its digits is 40824000, while the sum is 62.

The spelling of 55744415999 in words is "fifty-five billion, seven hundred forty-four million, four hundred fifteen thousand, nine hundred ninety-nine".