51375431048847 has 32 divisors (see below), whose sum is σ = 70259746132224. Its totient is φ = 33381997440000.

The previous prime is 51375431048807. The next prime is 51375431048849. The reversal of 51375431048847 is 74884013457315.

It is not a de Polignac number, because 51375431048847 - 2¹⁴ = 51375431032463 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51375431048849) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28584703 + ... + 30328799.

It is an arithmetic number, because the mean of its divisors is an integer number (2195617066632).

Almost surely, 2^{51375431048847} is an apocalyptic number.

51375431048847 is a deficient number, since it is larger than the sum of its proper divisors (18884315083377).

51375431048847 is a wasteful number, since it uses less digits than its factorization.

51375431048847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1745719.

The product of its (nonzero) digits is 45158400, while the sum is 60.

The spelling of 51375431048847 in words is "fifty-one trillion, three hundred seventy-five billion, four hundred thirty-one million, forty-eight thousand, eight hundred forty-seven".