51561051159 has 16 divisors (see below), whose sum is σ = 73405423872. Its totient is φ = 32114869248.

The previous prime is 51561051131. The next prime is 51561051163. The reversal of 51561051159 is 95115016515.

It is not a de Polignac number, because 51561051159 - 2⁹ = 51561050647 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51561051259) 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, 8686122 + ... + 8692055.

It is an arithmetic number, because the mean of its divisors is an integer number (4587838992).

Almost surely, 2^51561051159 is an apocalyptic number.

51561051159 is a deficient number, since it is larger than the sum of its proper divisors (21844372713).

51561051159 is a wasteful number, since it uses less digits than its factorization.

51561051159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17378246.

The product of its (nonzero) digits is 33750, while the sum is 39.

The spelling of 51561051159 in words is "fifty-one billion, five hundred sixty-one million, fifty-one thousand, one hundred fifty-nine".