61110555564 has 24 divisors (see below), whose sum is σ = 147191016448. Its totient is φ = 19713082320.

The previous prime is 61110555563. The next prime is 61110555577. The reversal of 61110555564 is 46555501116.

It is not an unprimeable number, because it can be changed into a prime (61110555563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82137472 + ... + 82138215.

Almost surely, 2^61110555564 is an apocalyptic number.

It is an amenable number.

61110555564 is an abundant number, since it is smaller than the sum of its proper divisors (86080460884).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61110555564 is a wasteful number, since it uses less digits than its factorization.

61110555564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164275725 (or 164275723 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 39.

The spelling of 61110555564 in words is "sixty-one billion, one hundred ten million, five hundred fifty-five thousand, five hundred sixty-four".