51104994624 has 168 divisors, whose sum is σ = 153059587200. Its totient is φ = 16272233472.

The previous prime is 51104994547. The next prime is 51104994643. The reversal of 51104994624 is 42649940115.

51104994624 is a `hidden beast` number, since 5 + 1 + 10 + 4 + 9 + 9 + 4 + 624 = 666.

It is a super-2 number, since 2×51104994624² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51104994624.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11748802 + ... + 11753150.

Almost surely, 2^51104994624 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 51104994624, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76529793600).

51104994624 is an abundant number, since it is smaller than the sum of its proper divisors (101954592576).

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

51104994624 is a wasteful number, since it uses less digits than its factorization.

51104994624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5277 (or 5264 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The spelling of 51104994624 in words is "fifty-one billion, one hundred four million, nine hundred ninety-four thousand, six hundred twenty-four".