51120265575513 has 32 divisors (see below), whose sum is σ = 68567532106752. Its totient is φ = 33877377230400.

The previous prime is 51120265575503. The next prime is 51120265575553. The reversal of 51120265575513 is 31557556202115.

It is a happy number.

It is not a de Polignac number, because 51120265575513 - 2⁴ = 51120265575497 is a prime.

It is a super-2 number, since 2×51120265575513² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51120265575503) 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, 413897698 + ... + 414021188.

It is an arithmetic number, because the mean of its divisors is an integer number (2142735378336).

Almost surely, 2^{51120265575513} is an apocalyptic number.

It is an amenable number.

51120265575513 is a deficient number, since it is larger than the sum of its proper divisors (17447266531239).

51120265575513 is a wasteful number, since it uses less digits than its factorization.

51120265575513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125085.

The product of its (nonzero) digits is 1575000, while the sum is 48.

The spelling of 51120265575513 in words is "fifty-one trillion, one hundred twenty billion, two hundred sixty-five million, five hundred seventy-five thousand, five hundred thirteen".