561660754048 has 16 divisors (see below), whose sum is σ = 1118933533710. Its totient is φ = 280830376960.

The previous prime is 561660754037. The next prime is 561660754051. The reversal of 561660754048 is 840457066165.

It can be written as a sum of positive squares in only one way, i.e., 539801722944 + 21859031104 = 734712^2 + 147848^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a junction number, because it is equal to n+sod(n) for n = 561660753986 and 561660754004.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2193987193 + ... + 2193987448.

Almost surely, 2^561660754048 is an apocalyptic number.

It is an amenable number.

561660754048 is a deficient number, since it is larger than the sum of its proper divisors (557272779662).

561660754048 is an equidigital number, since it uses as much as digits as its factorization.

561660754048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4387974655 (or 4387974643 counting only the distinct ones).

The product of its (nonzero) digits is 4838400, while the sum is 52.

The spelling of 561660754048 in words is "five hundred sixty-one billion, six hundred sixty million, seven hundred fifty-four thousand, forty-eight".