61110110556 has 72 divisors (see below), whose sum is σ = 174146082320. Its totient is φ = 18518211360.

The previous prime is 61110110531. The next prime is 61110110599. The reversal of 61110110556 is 65501101116.

61110110556 is a `hidden beast` number, since 6 + 1 + 1 + 101 + 1 + 0 + 556 = 666.

61110110556 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×61110110556² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2325091 + ... + 2351226.

Almost surely, 2^61110110556 is an apocalyptic number.

61110110556 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

61110110556 is an abundant number, since it is smaller than the sum of its proper divisors (113035971764).

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

61110110556 is a wasteful number, since it uses less digits than its factorization.

61110110556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4676352 (or 4676333 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 27.

The spelling of 61110110556 in words is "sixty-one billion, one hundred ten million, one hundred ten thousand, five hundred fifty-six".