55979366399 has 16 divisors (see below), whose sum is σ = 61749768960. Its totient is φ = 50324588160.

The previous prime is 55979366389. The next prime is 55979366407. The reversal of 55979366399 is 99366397955.

It is not a de Polignac number, because 55979366399 - 2⁴ = 55979366383 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55979366389) 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, 494384 + ... + 596970.

It is an arithmetic number, because the mean of its divisors is an integer number (3859360560).

Almost surely, 2^55979366399 is an apocalyptic number.

55979366399 is a deficient number, since it is larger than the sum of its proper divisors (5770402561).

55979366399 is a wasteful number, since it uses less digits than its factorization.

55979366399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103150.

The product of its digits is 372008700, while the sum is 71.

The spelling of 55979366399 in words is "fifty-five billion, nine hundred seventy-nine million, three hundred sixty-six thousand, three hundred ninety-nine".