561610616066 has 24 divisors (see below), whose sum is σ = 873777782592. Its totient is φ = 270713569800.

The previous prime is 561610616051. The next prime is 561610616093. The reversal of 561610616066 is 660616016165.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50030 + ... + 1061001.

It is an arithmetic number, because the mean of its divisors is an integer number (36407407608).

Almost surely, 2^561610616066 is an apocalyptic number.

561610616066 is a deficient number, since it is larger than the sum of its proper divisors (312167166526).

561610616066 is a wasteful number, since it uses less digits than its factorization.

561610616066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1111358 (or 1111327 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 44.

The spelling of 561610616066 in words is "five hundred sixty-one billion, six hundred ten million, six hundred sixteen thousand, sixty-six".