51135508011 has 32 divisors (see below), whose sum is σ = 81441745920. Its totient is φ = 27904086144.

The previous prime is 51135508001. The next prime is 51135508063. The reversal of 51135508011 is 11080553115.

It is not a de Polignac number, because 51135508011 - 2⁷ = 51135507883 is a prime.

It is a super-2 number, since 2×51135508011² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51135508011.

It is not an unprimeable number, because it can be changed into a prime (51135508001) 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, 209725 + ... + 382433.

It is an arithmetic number, because the mean of its divisors is an integer number (2545054560).

Almost surely, 2^51135508011 is an apocalyptic number.

51135508011 is a deficient number, since it is larger than the sum of its proper divisors (30306237909).

51135508011 is a wasteful number, since it uses less digits than its factorization.

51135508011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173355.

The product of its (nonzero) digits is 3000, while the sum is 30.

The spelling of 51135508011 in words is "fifty-one billion, one hundred thirty-five million, five hundred eight thousand, eleven".