51105984727 has 16 divisors (see below), whose sum is σ = 59003223552. Its totient is φ = 43358266080.

The previous prime is 51105984703. The next prime is 51105984733. The reversal of 51105984727 is 72748950115.

It is a cyclic number.

It is not a de Polignac number, because 51105984727 - 2³¹ = 48958501079 is a prime.

It is a super-2 number, since 2×51105984727² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51105964727) 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, 1527108 + ... + 1560214.

It is an arithmetic number, because the mean of its divisors is an integer number (3687701472).

Almost surely, 2^51105984727 is an apocalyptic number.

51105984727 is a deficient number, since it is larger than the sum of its proper divisors (7897238825).

51105984727 is a wasteful number, since it uses less digits than its factorization.

51105984727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35358.

The product of its (nonzero) digits is 705600, while the sum is 49.

The spelling of 51105984727 in words is "fifty-one billion, one hundred five million, nine hundred eighty-four thousand, seven hundred twenty-seven".