561606006996 has 36 divisors (see below), whose sum is σ = 1421640376884. Its totient is φ = 186934944000.

The previous prime is 561606006977. The next prime is 561606007021. The reversal of 561606006996 is 699600606165.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 190951520400 + 370654486596 = 436980^2 + 608814^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

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, 11101845 + ... + 11152316.

It is an arithmetic number, because the mean of its divisors is an integer number (39490010469).

Almost surely, 2^561606006996 is an apocalyptic number.

It is an amenable number.

561606006996 is an abundant number, since it is smaller than the sum of its proper divisors (860034369888).

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

561606006996 is a wasteful number, since it uses less digits than its factorization.

561606006996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22254872 (or 22254867 counting only the distinct ones).

The product of its (nonzero) digits is 3149280, while the sum is 54.

The spelling of 561606006996 in words is "five hundred sixty-one billion, six hundred six million, six thousand, nine hundred ninety-six".