561116161072 has 80 divisors (see below), whose sum is σ = 1116439793280. Its totient is φ = 273100778496.

The previous prime is 561116161049. The next prime is 561116161079. The reversal of 561116161072 is 270161611165.

It is not an unprimeable number, because it can be changed into a prime (561116161079) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 158192803 + ... + 158196349.

It is an arithmetic number, because the mean of its divisors is an integer number (13955497416).

Almost surely, 2^561116161072 is an apocalyptic number.

It is an amenable number.

561116161072 is a deficient number, since it is larger than the sum of its proper divisors (555323632208).

561116161072 is a wasteful number, since it uses less digits than its factorization.

561116161072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5210 (or 5204 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 37.

The spelling of 561116161072 in words is "five hundred sixty-one billion, one hundred sixteen million, one hundred sixty-one thousand, seventy-two".