51171010015 has 48 divisors (see below), whose sum is σ = 64507135104. Its totient is φ = 38953175040.

The previous prime is 51171010003. The next prime is 51171010043. The reversal of 51171010015 is 51001017115.

It is not a de Polignac number, because 51171010015 - 2⁷ = 51171009887 is a prime.

It is a super-3 number, since 3×51171010015³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 139430362 + ... + 139430728.

It is an arithmetic number, because the mean of its divisors is an integer number (1343898648).

Almost surely, 2^51171010015 is an apocalyptic number.

51171010015 is a deficient number, since it is larger than the sum of its proper divisors (13336125089).

51171010015 is a wasteful number, since it uses less digits than its factorization.

51171010015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 820 (or 779 counting only the distinct ones).

The product of its (nonzero) digits is 175, while the sum is 22.

The spelling of 51171010015 in words is "fifty-one billion, one hundred seventy-one million, ten thousand, fifteen".