51135005515 has 16 divisors (see below), whose sum is σ = 66947977440. Its totient is φ = 37184869120.

The previous prime is 51135005503. The next prime is 51135005521. The reversal of 51135005515 is 51550053115.

It is not a de Polignac number, because 51135005515 - 2²³ = 51126616907 is a prime.

It is a super-2 number, since 2×51135005515² (a number of 22 digits) contains 22 as substring.

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, 484917 + ... + 580873.

It is an arithmetic number, because the mean of its divisors is an integer number (4184248590).

Almost surely, 2^51135005515 is an apocalyptic number.

51135005515 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

51135005515 is a deficient number, since it is larger than the sum of its proper divisors (15812971925).

51135005515 is a wasteful number, since it uses less digits than its factorization.

51135005515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105662.

The product of its (nonzero) digits is 9375, while the sum is 31.

The spelling of 51135005515 in words is "fifty-one billion, one hundred thirty-five million, five thousand, five hundred fifteen".