60561661615664 has 80 divisors (see below), whose sum is σ = 131327804065920. Its totient is φ = 26816895866880.

The previous prime is 60561661615577. The next prime is 60561661615687. The reversal of 60561661615664 is 46651616616506.

60561661615664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7688897 + ... + 13425440.

It is an arithmetic number, because the mean of its divisors is an integer number (1641597550824).

Almost surely, 2^{60561661615664} is an apocalyptic number.

It is an amenable number.

60561661615664 is an abundant number, since it is smaller than the sum of its proper divisors (70766142450256).

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

60561661615664 is a wasteful number, since it uses less digits than its factorization.

60561661615664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21114778 (or 21114772 counting only the distinct ones).

The product of its (nonzero) digits is 27993600, while the sum is 59.

The spelling of 60561661615664 in words is "sixty trillion, five hundred sixty-one billion, six hundred sixty-one million, six hundred fifteen thousand, six hundred sixty-four".