51131132005 has 16 divisors (see below), whose sum is σ = 64099736064. Its totient is φ = 39108450240.

The previous prime is 51131131993. The next prime is 51131132023. The reversal of 51131132005 is 50023113115.

It is not a de Polignac number, because 51131132005 - 2⁵ = 51131131973 is a prime.

It is a super-2 number, since 2×51131132005² (a number of 22 digits) contains 22 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 15 ways as a sum of consecutive naturals, for example, 1974354 + ... + 2000083.

It is an arithmetic number, because the mean of its divisors is an integer number (4006233504).

Almost surely, 2^51131132005 is an apocalyptic number.

It is an amenable number.

51131132005 is a deficient number, since it is larger than the sum of its proper divisors (12968604059).

51131132005 is a wasteful number, since it uses less digits than its factorization.

51131132005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3974556.

The product of its (nonzero) digits is 450, while the sum is 22.

The spelling of 51131132005 in words is "fifty-one billion, one hundred thirty-one million, one hundred thirty-two thousand, five".