55964855772 has 192 divisors, whose sum is σ = 170291322880. Its totient is φ = 15564441600.

The previous prime is 55964855761. The next prime is 55964855773. The reversal of 55964855772 is 27755846955.

55964855772 is a `hidden beast` number, since 5 + 5 + 9 + 6 + 4 + 8 + 557 + 72 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55964855773) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4466997 + ... + 4479507.

Almost surely, 2^55964855772 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55964855772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85145661440).

55964855772 is an abundant number, since it is smaller than the sum of its proper divisors (114326467108).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55964855772 is a wasteful number, since it uses less digits than its factorization.

55964855772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12689 (or 12681 counting only the distinct ones).

The product of its digits is 105840000, while the sum is 63.

The spelling of 55964855772 in words is "fifty-five billion, nine hundred sixty-four million, eight hundred fifty-five thousand, seven hundred seventy-two".