61110555556 has 12 divisors (see below), whose sum is σ = 106948946160. Its totient is φ = 30553713800.

The previous prime is 61110555523. The next prime is 61110555563. The reversal of 61110555556 is 65555501116.

61110555556 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 300766 + ... + 461173.

It is an arithmetic number, because the mean of its divisors is an integer number (8912412180).

Almost surely, 2^61110555556 is an apocalyptic number.

It is an amenable number.

61110555556 is a deficient number, since it is larger than the sum of its proper divisors (45838390604).

61110555556 is a wasteful number, since it uses less digits than its factorization.

61110555556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 781994 (or 781992 counting only the distinct ones).

The product of its (nonzero) digits is 112500, while the sum is 40.

The spelling of 61110555556 in words is "sixty-one billion, one hundred ten million, five hundred fifty-five thousand, five hundred fifty-six".