61115111056 has 10 divisors (see below), whose sum is σ = 118410527702. Its totient is φ = 30557555520.

The previous prime is 61115111051. The next prime is 61115111077. The reversal of 61115111056 is 65011151116.

It can be written as a sum of positive squares in only one way, i.e., 47691571456 + 13423539600 = 218384^2 + 115860^2 .

It is not an unprimeable number, because it can be changed into a prime (61115111051) by changing a digit.

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 as a sum of consecutive naturals, namely, 1909847205 + ... + 1909847236.

Almost surely, 2^61115111056 is an apocalyptic number.

It is an amenable number.

61115111056 is a deficient number, since it is larger than the sum of its proper divisors (57295416646).

61115111056 is a wasteful number, since it uses less digits than its factorization.

61115111056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3819694449 (or 3819694443 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 28.

The spelling of 61115111056 in words is "sixty-one billion, one hundred fifteen million, one hundred eleven thousand, fifty-six".