55579216369 has 4 divisors (see below), whose sum is σ = 55581811200. Its totient is φ = 55576621540.

The previous prime is 55579216331. The next prime is 55579216409. The reversal of 55579216369 is 96361297555.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 55579216369 - 2³³ = 46989281777 is a prime.

It is a super-2 number, since 2×55579216369² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55579210369) 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 3 ways as a sum of consecutive naturals, for example, 1265017 + ... + 1308214.

It is an arithmetic number, because the mean of its divisors is an integer number (13895452800).

Almost surely, 2^55579216369 is an apocalyptic number.

It is an amenable number.

55579216369 is a deficient number, since it is larger than the sum of its proper divisors (2594831).

55579216369 is a wasteful number, since it uses less digits than its factorization.

55579216369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2594830.

The product of its digits is 15309000, while the sum is 58.

The spelling of 55579216369 in words is "fifty-five billion, five hundred seventy-nine million, two hundred sixteen thousand, three hundred sixty-nine".