61112455569 has 12 divisors (see below), whose sum is σ = 96298414992. Its totient is φ = 37037851800.

The previous prime is 61112455549. The next prime is 61112455597. The reversal of 61112455569 is 96555421116.

61112455569 is a `hidden beast` number, since 6 + 1 + 11 + 24 + 55 + 569 = 666.

It is not a de Polignac number, because 61112455569 - 2¹⁵ = 61112422801 is a prime.

It is a super-2 number, since 2×61112455569² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61112455549) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 308648667 + ... + 308648864.

It is an arithmetic number, because the mean of its divisors is an integer number (8024867916).

Almost surely, 2^61112455569 is an apocalyptic number.

It is an amenable number.

61112455569 is a deficient number, since it is larger than the sum of its proper divisors (35185959423).

61112455569 is a wasteful number, since it uses less digits than its factorization.

61112455569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617297548 (or 617297545 counting only the distinct ones).

The product of its digits is 324000, while the sum is 45.

The spelling of 61112455569 in words is "sixty-one billion, one hundred twelve million, four hundred fifty-five thousand, five hundred sixty-nine".