55994579712 has 216 divisors, whose sum is σ = 171652781664. Its totient is φ = 17515610112.

The previous prime is 55994579687. The next prime is 55994579713. The reversal of 55994579712 is 21797549955.

55994579712 is a `hidden beast` number, since 5 + 5 + 99 + 457 + 97 + 1 + 2 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 55994579712.

It is not an unprimeable number, because it can be changed into a prime (55994579713) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2798608 + ... + 2818544.

It is an arithmetic number, because the mean of its divisors is an integer number (794688804).

Almost surely, 2^55994579712 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 55994579712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85826390832).

55994579712 is an abundant number, since it is smaller than the sum of its proper divisors (115658201952).

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

55994579712 is a wasteful number, since it uses less digits than its factorization.

55994579712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20035 (or 20018 counting only the distinct ones).

The product of its digits is 35721000, while the sum is 63.

The spelling of 55994579712 in words is "fifty-five billion, nine hundred ninety-four million, five hundred seventy-nine thousand, seven hundred twelve".