51105606915 has 128 divisors (see below), whose sum is σ = 97250181120. Its totient is φ = 22641292800.

The previous prime is 51105606883. The next prime is 51105606949. The reversal of 51105606915 is 51960650115.

It is not a de Polignac number, because 51105606915 - 2⁵ = 51105606883 is a prime.

It is a super-2 number, since 2×51105606915² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 37221169 + ... + 37222541.

It is an arithmetic number, because the mean of its divisors is an integer number (759767040).

Almost surely, 2^51105606915 is an apocalyptic number.

51105606915 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

51105606915 is a deficient number, since it is larger than the sum of its proper divisors (46144574205).

51105606915 is a wasteful number, since it uses less digits than its factorization.

51105606915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1825.

The product of its (nonzero) digits is 40500, while the sum is 39.

The spelling of 51105606915 in words is "fifty-one billion, one hundred five million, six hundred six thousand, nine hundred fifteen".