55750816512 has 288 divisors, whose sum is σ = 173410997760. Its totient is φ = 17633341440.

The previous prime is 55750816483. The next prime is 55750816571. The reversal of 55750816512 is 21561805755.

55750816512 is a `hidden beast` number, since 5 + 5 + 7 + 50 + 81 + 6 + 512 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

It is a super-2 number, since 2×55750816512² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20824518 + ... + 20827194.

It is an arithmetic number, because the mean of its divisors is an integer number (602121520).

Almost surely, 2^55750816512 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 55750816512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86705498880).

55750816512 is an abundant number, since it is smaller than the sum of its proper divisors (117660181248).

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

55750816512 is a wasteful number, since it uses less digits than its factorization.

55750816512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2856 (or 2836 counting only the distinct ones).

The product of its (nonzero) digits is 420000, while the sum is 45.

The spelling of 55750816512 in words is "fifty-five billion, seven hundred fifty million, eight hundred sixteen thousand, five hundred twelve".