610561616566 has 32 divisors (see below), whose sum is σ = 1066785147648. Its totient is φ = 259288038240.

The previous prime is 610561616557. The next prime is 610561616593. The reversal of 610561616566 is 665616165016.

610561616566 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14008981 + ... + 14052496.

It is an arithmetic number, because the mean of its divisors is an integer number (33337035864).

Almost surely, 2^610561616566 is an apocalyptic number.

610561616566 is a deficient number, since it is larger than the sum of its proper divisors (456223531082).

610561616566 is a wasteful number, since it uses less digits than its factorization.

610561616566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28061556.

The product of its (nonzero) digits is 1166400, while the sum is 49.

The spelling of 610561616566 in words is "six hundred ten billion, five hundred sixty-one million, six hundred sixteen thousand, five hundred sixty-six".