55979591765 has 8 divisors (see below), whose sum is σ = 68178130080. Its totient is φ = 44115260112.

The previous prime is 55979591761. The next prime is 55979591791. The reversal of 55979591765 is 56719597955.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55979591765 - 2² = 55979591761 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55979591695 and 55979591704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55979591761) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83551295 + ... + 83551964.

It is an arithmetic number, because the mean of its divisors is an integer number (8522266260).

Almost surely, 2^55979591765 is an apocalyptic number.

It is an amenable number.

55979591765 is a deficient number, since it is larger than the sum of its proper divisors (12198538315).

55979591765 is a wasteful number, since it uses less digits than its factorization.

55979591765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167103331.

The product of its digits is 133953750, while the sum is 68.

The spelling of 55979591765 in words is "fifty-five billion, nine hundred seventy-nine million, five hundred ninety-one thousand, seven hundred sixty-five".