51600115621 has 16 divisors (see below), whose sum is σ = 55003586560. Its totient is φ = 48269072880.

The previous prime is 51600115573. The next prime is 51600115643. The reversal of 51600115621 is 12651100615.

It is a happy number.

It is not a de Polignac number, because 51600115621 - 2⁹ = 51600115109 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51600115621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51600115661) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 458470 + ... + 559816.

It is an arithmetic number, because the mean of its divisors is an integer number (3437724160).

Almost surely, 2^51600115621 is an apocalyptic number.

It is an amenable number.

51600115621 is a deficient number, since it is larger than the sum of its proper divisors (3403470939).

51600115621 is a wasteful number, since it uses less digits than its factorization.

51600115621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101704.

The product of its (nonzero) digits is 1800, while the sum is 28.

The spelling of 51600115621 in words is "fifty-one billion, six hundred million, one hundred fifteen thousand, six hundred twenty-one".