51135027699 has 16 divisors (see below), whose sum is σ = 77923358208. Its totient is φ = 29218772352.

The previous prime is 51135027673. The next prime is 51135027707. The reversal of 51135027699 is 99672053115.

It is not a de Polignac number, because 51135027699 - 2¹¹ = 51135025651 is a prime.

It is a super-2 number, since 2×51135027699² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51135037699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 722554 + ... + 790160.

It is an arithmetic number, because the mean of its divisors is an integer number (4870209888).

Almost surely, 2^51135027699 is an apocalyptic number.

51135027699 is a deficient number, since it is larger than the sum of its proper divisors (26788330509).

51135027699 is a wasteful number, since it uses less digits than its factorization.

51135027699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103634.

The product of its (nonzero) digits is 510300, while the sum is 48.

The spelling of 51135027699 in words is "fifty-one billion, one hundred thirty-five million, twenty-seven thousand, six hundred ninety-nine".