61161168585 has 32 divisors (see below), whose sum is σ = 107035822080. Its totient is φ = 29575627200.

The previous prime is 61161168533. The next prime is 61161168697. The reversal of 61161168585 is 58586116116.

It is not a de Polignac number, because 61161168585 - 2⁸ = 61161168329 is a prime.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 426481 + ... + 551550.

It is an arithmetic number, because the mean of its divisors is an integer number (3344869440).

Almost surely, 2^61161168585 is an apocalyptic number.

It is an amenable number.

61161168585 is a deficient number, since it is larger than the sum of its proper divisors (45874653495).

61161168585 is a wasteful number, since it uses less digits than its factorization.

61161168585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 978429.

The product of its digits is 345600, while the sum is 48.

The spelling of 61161168585 in words is "sixty-one billion, one hundred sixty-one million, one hundred sixty-eight thousand, five hundred eighty-five".