51616515166597 has 4 divisors (see below), whose sum is σ = 51616638256320. Its totient is φ = 51616392076876.

The previous prime is 51616515166591. The next prime is 51616515166621. The reversal of 51616515166597 is 79566151561615.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51616515166597 - 2³ = 51616515166589 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 (51616515166591) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60913693 + ... + 61755250.

It is an arithmetic number, because the mean of its divisors is an integer number (12904159564080).

Almost surely, 2^{51616515166597} is an apocalyptic number.

It is an amenable number.

51616515166597 is a deficient number, since it is larger than the sum of its proper divisors (123089723).

51616515166597 is a wasteful number, since it uses less digits than its factorization.

51616515166597 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123089722.

The product of its digits is 51030000, while the sum is 64.

The spelling of 51616515166597 in words is "fifty-one trillion, six hundred sixteen billion, five hundred fifteen million, one hundred sixty-six thousand, five hundred ninety-seven".