51264250671575 has 24 divisors (see below), whose sum is σ = 64517922350592. Its totient is φ = 40398363133920.

The previous prime is 51264250671551. The next prime is 51264250671589. The reversal of 51264250671575 is 57517605246215.

It is a de Polignac number, because none of the positive numbers 2^k-51264250671575 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 51264250671575.

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, 77872952 + ... + 78528498.

It is an arithmetic number, because the mean of its divisors is an integer number (2688246764608).

Almost surely, 2^{51264250671575} is an apocalyptic number.

51264250671575 is a deficient number, since it is larger than the sum of its proper divisors (13253671679017).

51264250671575 is a wasteful number, since it uses less digits than its factorization.

51264250671575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 702311 (or 702306 counting only the distinct ones).

The product of its (nonzero) digits is 17640000, while the sum is 56.

The spelling of 51264250671575 in words is "fifty-one trillion, two hundred sixty-four billion, two hundred fifty million, six hundred seventy-one thousand, five hundred seventy-five".