561064651116 has 12 divisors (see below), whose sum is σ = 1309150852632. Its totient is φ = 187021550368.

The previous prime is 561064651109. The next prime is 561064651151. The reversal of 561064651116 is 611156460165.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23377693785 + ... + 23377693808.

It is an arithmetic number, because the mean of its divisors is an integer number (109095904386).

Almost surely, 2^561064651116 is an apocalyptic number.

It is an amenable number.

561064651116 is an abundant number, since it is smaller than the sum of its proper divisors (748086201516).

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

561064651116 is a wasteful number, since it uses less digits than its factorization.

561064651116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46755387600 (or 46755387598 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 42.

The spelling of 561064651116 in words is "five hundred sixty-one billion, sixty-four million, six hundred fifty-one thousand, one hundred sixteen".