561164815003 has 16 divisors (see below), whose sum is σ = 606225839296. Its totient is φ = 516375699840.

The previous prime is 561164814989. The next prime is 561164815033. The reversal of 561164815003 is 300518461165.

It is not a de Polignac number, because 561164815003 - 2¹⁷ = 561164683931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (561164815033) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11181001 + ... + 11231077.

It is an arithmetic number, because the mean of its divisors is an integer number (37889114956).

Almost surely, 2^561164815003 is an apocalyptic number.

561164815003 is a deficient number, since it is larger than the sum of its proper divisors (45061024293).

561164815003 is a wasteful number, since it uses less digits than its factorization.

561164815003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52774.

The product of its (nonzero) digits is 86400, while the sum is 40.

The spelling of 561164815003 in words is "five hundred sixty-one billion, one hundred sixty-four million, eight hundred fifteen thousand, three".