561303436456 has 16 divisors (see below), whose sum is σ = 1202793078240. Its totient is φ = 240558615600.

The previous prime is 561303436373. The next prime is 561303436501. The reversal of 561303436456 is 654634303165.

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, 5011637770 + ... + 5011637881.

It is an arithmetic number, because the mean of its divisors is an integer number (75174567390).

Almost surely, 2^561303436456 is an apocalyptic number.

561303436456 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

561303436456 is an abundant number, since it is smaller than the sum of its proper divisors (641489641784).

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

561303436456 is a wasteful number, since it uses less digits than its factorization.

561303436456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10023275664 (or 10023275660 counting only the distinct ones).

The product of its (nonzero) digits is 2332800, while the sum is 46.

The spelling of 561303436456 in words is "five hundred sixty-one billion, three hundred three million, four hundred thirty-six thousand, four hundred fifty-six".