55793947779 has 12 divisors (see below), whose sum is σ = 80668837600. Its totient is φ = 37160159184.

The previous prime is 55793947751. The next prime is 55793947787. The reversal of 55793947779 is 97774939755.

55793947779 is a `hidden beast` number, since 5 + 57 + 9 + 39 + 477 + 79 = 666.

It is not a de Polignac number, because 55793947779 - 2¹² = 55793943683 is a prime.

It is a super-2 number, since 2×55793947779² (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 (55793247779) 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 11 ways as a sum of consecutive naturals, for example, 2973964 + ... + 2992665.

Almost surely, 2^55793947779 is an apocalyptic number.

55793947779 is a deficient number, since it is larger than the sum of its proper divisors (24874889821).

55793947779 is a wasteful number, since it uses less digits than its factorization.

55793947779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5967674 (or 5967671 counting only the distinct ones).

The product of its digits is 525098700, while the sum is 72.

The spelling of 55793947779 in words is "fifty-five billion, seven hundred ninety-three million, nine hundred forty-seven thousand, seven hundred seventy-nine".