61110561552 has 20 divisors (see below), whose sum is σ = 157868950800. Its totient is φ = 20370187168.

The previous prime is 61110561529. The next prime is 61110561559. The reversal of 61110561552 is 25516501116.

It is not an unprimeable number, because it can be changed into a prime (61110561559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 636568302 + ... + 636568397.

It is an arithmetic number, because the mean of its divisors is an integer number (7893447540).

Almost surely, 2^61110561552 is an apocalyptic number.

It is an amenable number.

61110561552 is an abundant number, since it is smaller than the sum of its proper divisors (96758389248).

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

61110561552 is a wasteful number, since it uses less digits than its factorization.

61110561552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1273136710 (or 1273136704 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 33.

The spelling of 61110561552 in words is "sixty-one billion, one hundred ten million, five hundred sixty-one thousand, five hundred fifty-two".