51215442570364 has 12 divisors (see below), whose sum is σ = 89702915297688. Its totient is φ = 25586038199600.

The previous prime is 51215442570317. The next prime is 51215442570419. The reversal of 51215442570364 is 46307524451215.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5420766082 + ... + 5420775529.

It is an arithmetic number, because the mean of its divisors is an integer number (7475242941474).

Almost surely, 2^{51215442570364} is an apocalyptic number.

It is an amenable number.

51215442570364 is a deficient number, since it is larger than the sum of its proper divisors (38487472727324).

51215442570364 is a wasteful number, since it uses less digits than its factorization.

51215442570364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10841542796 (or 10841542794 counting only the distinct ones).

The product of its (nonzero) digits is 4032000, while the sum is 49.

The spelling of 51215442570364 in words is "fifty-one trillion, two hundred fifteen billion, four hundred forty-two million, five hundred seventy thousand, three hundred sixty-four".