61110555560 has 32 divisors (see below), whose sum is σ = 137750168160. Its totient is φ = 24399525696.

The previous prime is 61110555523. The next prime is 61110555563. The reversal of 61110555560 is 6555501116.

61110555560 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 61110555560.

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

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1374614 + ... + 1418373.

It is an arithmetic number, because the mean of its divisors is an integer number (4304692755).

Almost surely, 2^61110555560 is an apocalyptic number.

It is an amenable number.

61110555560 is an abundant number, since it is smaller than the sum of its proper divisors (76639612600).

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

61110555560 is a wasteful number, since it uses less digits than its factorization.

61110555560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2793545 (or 2793541 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 35.

The spelling of 61110555560 in words is "sixty-one billion, one hundred ten million, five hundred fifty-five thousand, five hundred sixty".