51105511039 has 16 divisors (see below), whose sum is σ = 57121989120. Its totient is φ = 45317880000.

The previous prime is 51105510983. The next prime is 51105511057. The reversal of 51105511039 is 93011550115.

It is a cyclic number.

It is not a de Polignac number, because 51105511039 - 2²¹ = 51103413887 is a prime.

It is a super-2 number, since 2×51105511039² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51105511039.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51105511099) 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, 4792864 + ... + 4803514.

It is an arithmetic number, because the mean of its divisors is an integer number (3570124320).

Almost surely, 2^51105511039 is an apocalyptic number.

51105511039 is a deficient number, since it is larger than the sum of its proper divisors (6016478081).

51105511039 is a wasteful number, since it uses less digits than its factorization.

51105511039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21342.

The product of its (nonzero) digits is 3375, while the sum is 31.

The spelling of 51105511039 in words is "fifty-one billion, one hundred five million, five hundred eleven thousand, thirty-nine".