55979631803 has 18 divisors (see below), whose sum is σ = 57368020716. Its totient is φ = 54619992064.

The previous prime is 55979631769. The next prime is 55979631811. The reversal of 55979631803 is 30813697955.

It is not a de Polignac number, because 55979631803 - 2¹⁰ = 55979630779 is a prime.

It is a super-3 number, since 3×55979631803³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55979631833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 217819451 + ... + 217819707.

It is an arithmetic number, because the mean of its divisors is an integer number (3187112262).

Almost surely, 2^55979631803 is an apocalyptic number.

55979631803 is a deficient number, since it is larger than the sum of its proper divisors (1388388913).

55979631803 is an frugal number, since it uses more digits than its factorization.

55979631803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 799 (or 453 counting only the distinct ones).

The product of its (nonzero) digits is 6123600, while the sum is 56.

The spelling of 55979631803 in words is "fifty-five billion, nine hundred seventy-nine million, six hundred thirty-one thousand, eight hundred three".