61100100110556 has 36 divisors (see below), whose sum is σ = 166328050302232. Its totient is φ = 18800030803104.

The previous prime is 61100100110537. The next prime is 61100100110587. The reversal of 61100100110556 is 65501100100116.

61100100110556 is a `hidden beast` number, since 6 + 1 + 1 + 0 + 0 + 100 + 1 + 1 + 0 + 556 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 65277884266 + ... + 65277885201.

Almost surely, 2^{61100100110556} is an apocalyptic number.

It is an amenable number.

61100100110556 is an abundant number, since it is smaller than the sum of its proper divisors (105227950191676).

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

61100100110556 is a wasteful number, since it uses less digits than its factorization.

61100100110556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130555769490 (or 130555769485 counting only the distinct ones).

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

The spelling of 61100100110556 in words is "sixty-one trillion, one hundred billion, one hundred million, one hundred ten thousand, five hundred fifty-six".