55964776189 has 16 divisors (see below), whose sum is σ = 66424027648. Its totient is φ = 46154897712.

The previous prime is 55964776187. The next prime is 55964776229. The reversal of 55964776189 is 98167746955.

It is not a de Polignac number, because 55964776189 - 2¹ = 55964776187 is a prime.

It is a super-2 number, since 2×55964776189² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (67).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55964776187) 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, 1367367 + ... + 1407700.

It is an arithmetic number, because the mean of its divisors is an integer number (4151501728).

Almost surely, 2^55964776189 is an apocalyptic number.

It is an amenable number.

55964776189 is a deficient number, since it is larger than the sum of its proper divisors (10459251459).

55964776189 is a wasteful number, since it uses less digits than its factorization.

55964776189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2775184.

The product of its digits is 114307200, while the sum is 67.

The spelling of 55964776189 in words is "fifty-five billion, nine hundred sixty-four million, seven hundred seventy-six thousand, one hundred eighty-nine".