51818027131 has 16 divisors (see below), whose sum is σ = 59333904000. Its totient is φ = 44829969408.

The previous prime is 51818027113. The next prime is 51818027147. The reversal of 51818027131 is 13172081815.

It is a happy number.

It is not a de Polignac number, because 51818027131 - 2⁷ = 51818027003 is a prime.

It is a super-2 number, since 2×51818027131² (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 (51818027111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 437706 + ... + 543343.

It is an arithmetic number, because the mean of its divisors is an integer number (3708369000).

Almost surely, 2^51818027131 is an apocalyptic number.

51818027131 is a deficient number, since it is larger than the sum of its proper divisors (7515876869).

51818027131 is a wasteful number, since it uses less digits than its factorization.

51818027131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 981318.

The product of its (nonzero) digits is 13440, while the sum is 37.

The spelling of 51818027131 in words is "fifty-one billion, eight hundred eighteen million, twenty-seven thousand, one hundred thirty-one".