561456544016 has 10 divisors (see below), whose sum is σ = 1087822054062. Its totient is φ = 280728272000.

The previous prime is 561456544003. The next prime is 561456544021. The reversal of 561456544016 is 610445654165.

It can be written as a sum of positive squares in only one way, i.e., 558451311616 + 3005232400 = 747296^2 + 54820^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17545516985 + ... + 17545517016.

Almost surely, 2^561456544016 is an apocalyptic number.

It is an amenable number.

561456544016 is a deficient number, since it is larger than the sum of its proper divisors (526365510046).

561456544016 is a wasteful number, since it uses less digits than its factorization.

561456544016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35091034009 (or 35091034003 counting only the distinct ones).

The product of its (nonzero) digits is 1728000, while the sum is 47.

The spelling of 561456544016 in words is "five hundred sixty-one billion, four hundred fifty-six million, five hundred forty-four thousand, sixteen".