51599315615 has 16 divisors (see below), whose sum is σ = 64632024576. Its totient is φ = 39472039200.

The previous prime is 51599315611. The next prime is 51599315617. The reversal of 51599315615 is 51651399515.

It is a happy number.

It is not a de Polignac number, because 51599315615 - 2² = 51599315611 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51599315611) 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, 296660 + ... + 437270.

It is an arithmetic number, because the mean of its divisors is an integer number (4039501536).

Almost surely, 2^51599315615 is an apocalyptic number.

51599315615 is a deficient number, since it is larger than the sum of its proper divisors (13032708961).

51599315615 is a wasteful number, since it uses less digits than its factorization.

51599315615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143830.

The product of its digits is 911250, while the sum is 50.

The spelling of 51599315615 in words is "fifty-one billion, five hundred ninety-nine million, three hundred fifteen thousand, six hundred fifteen".