51161145586 has 16 divisors (see below), whose sum is σ = 79394515200. Its totient is φ = 24696452368.

The previous prime is 51161145583. The next prime is 51161145641. The reversal of 51161145586 is 68554116115.

51161145586 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (51161145583) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 867135 + ... + 924253.

It is an arithmetic number, because the mean of its divisors is an integer number (4962157200).

Almost surely, 2^51161145586 is an apocalyptic number.

51161145586 is a deficient number, since it is larger than the sum of its proper divisors (28233369614).

51161145586 is a wasteful number, since it uses less digits than its factorization.

51161145586 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72593.

The product of its digits is 144000, while the sum is 43.

The spelling of 51161145586 in words is "fifty-one billion, one hundred sixty-one million, one hundred forty-five thousand, five hundred eighty-six".