55913686965 has 16 divisors (see below), whose sum is σ = 99402110400. Its totient is φ = 29820632976.

The previous prime is 55913686963. The next prime is 55913686979. The reversal of 55913686965 is 56968631955.

55913686965 is a `hidden beast` number, since 5 + 591 + 36 + 8 + 6 + 9 + 6 + 5 = 666.

It is not a de Polignac number, because 55913686965 - 2¹ = 55913686963 is a prime.

It is a super-2 number, since 2×55913686965² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55913686963) 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 15 ways as a sum of consecutive naturals, for example, 207087595 + ... + 207087864.

It is an arithmetic number, because the mean of its divisors is an integer number (6212631900).

Almost surely, 2^55913686965 is an apocalyptic number.

It is an amenable number.

55913686965 is a deficient number, since it is larger than the sum of its proper divisors (43488423435).

55913686965 is a wasteful number, since it uses less digits than its factorization.

55913686965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414175473 (or 414175467 counting only the distinct ones).

The product of its digits is 52488000, while the sum is 63.

The spelling of 55913686965 in words is "fifty-five billion, nine hundred thirteen million, six hundred eighty-six thousand, nine hundred sixty-five".