61110055656 has 96 divisors (see below), whose sum is σ = 180002670120. Its totient is φ = 18616896000.

The previous prime is 61110055637. The next prime is 61110055667. The reversal of 61110055656 is 65655001116.

It can be written as a sum of positive squares in 4 ways, for example, as 59326344900 + 1783710756 = 243570^2 + 42234^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 61110055656.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 228675 + ... + 417746.

Almost surely, 2^61110055656 is an apocalyptic number.

It is an amenable number.

61110055656 is an abundant number, since it is smaller than the sum of its proper divisors (118892614464).

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

61110055656 is a wasteful number, since it uses less digits than its factorization.

61110055656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 646547 (or 646540 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 36.

The spelling of 61110055656 in words is "sixty-one billion, one hundred ten million, fifty-five thousand, six hundred fifty-six".