51017011507 has 16 divisors (see below), whose sum is σ = 63678235392. Its totient is φ = 39708133920.

The previous prime is 51017011501. The next prime is 51017011517. The reversal of 51017011507 is 70511071015.

It is not a de Polignac number, because 51017011507 - 2³ = 51017011499 is a prime.

It is a super-2 number, since 2×51017011507² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51017011501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 310213 + ... + 445270.

It is an arithmetic number, because the mean of its divisors is an integer number (3979889712).

Almost surely, 2^51017011507 is an apocalyptic number.

51017011507 is a deficient number, since it is larger than the sum of its proper divisors (12661223885).

51017011507 is a wasteful number, since it uses less digits than its factorization.

51017011507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 756378.

The product of its (nonzero) digits is 1225, while the sum is 28.

The spelling of 51017011507 in words is "fifty-one billion, seventeen million, eleven thousand, five hundred seven".