51624019056 has 80 divisors (see below), whose sum is σ = 137485762848. Its totient is φ = 16681267200.

The previous prime is 51624019021. The next prime is 51624019079. The reversal of 51624019056 is 65091042615.

It is a super-2 number, since 2×51624019056² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 225436 + ... + 392516.

Almost surely, 2^51624019056 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 51624019056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68742881424).

51624019056 is an abundant number, since it is smaller than the sum of its proper divisors (85861743792).

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

51624019056 is a wasteful number, since it uses less digits than its factorization.

51624019056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167290 (or 167284 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 39.

The spelling of 51624019056 in words is "fifty-one billion, six hundred twenty-four million, nineteen thousand, fifty-six".