51465720677 has 16 divisors (see below), whose sum is σ = 58911656832. Its totient is φ = 44043279360.

The previous prime is 51465720659. The next prime is 51465720727. The reversal of 51465720677 is 77602756415.

It is a cyclic number.

It is not a de Polignac number, because 51465720677 - 2⁶ = 51465720613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51465720617) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19368533 + ... + 19371189.

It is an arithmetic number, because the mean of its divisors is an integer number (3681978552).

Almost surely, 2^51465720677 is an apocalyptic number.

It is an amenable number.

51465720677 is a deficient number, since it is larger than the sum of its proper divisors (7445936155).

51465720677 is a wasteful number, since it uses less digits than its factorization.

51465720677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6028.

The product of its (nonzero) digits is 2469600, while the sum is 50.

The spelling of 51465720677 in words is "fifty-one billion, four hundred sixty-five million, seven hundred twenty thousand, six hundred seventy-seven".