55712099520 has 672 divisors, whose sum is σ = 247177681920. Its totient is φ = 11176058880.

The previous prime is 55712099519. The next prime is 55712099537. The reversal of 55712099520 is 2599021755.

55712099520 is a `hidden beast` number, since 5 + 571 + 20 + 9 + 9 + 52 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (672).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 6426709 + ... + 6435371.

Almost surely, 2^55712099520 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 55712099520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123588840960).

55712099520 is an abundant number, since it is smaller than the sum of its proper divisors (191465582400).

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

55712099520 is a wasteful number, since it uses less digits than its factorization.

55712099520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8733 (or 8720 counting only the distinct ones).

The product of its (nonzero) digits is 283500, while the sum is 45.

The spelling of 55712099520 in words is "fifty-five billion, seven hundred twelve million, ninety-nine thousand, five hundred twenty".