561844159401 has 16 divisors (see below), whose sum is σ = 856164310400. Its totient is φ = 321045994368.

The previous prime is 561844159379. The next prime is 561844159411. The reversal of 561844159401 is 104951448165.

It is not a de Polignac number, because 561844159401 - 2⁷ = 561844159273 is a prime.

It is not an unprimeable number, because it can be changed into a prime (561844159411) 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, 622455 + ... + 1229283.

It is an arithmetic number, because the mean of its divisors is an integer number (53510269400).

Almost surely, 2^561844159401 is an apocalyptic number.

It is an amenable number.

561844159401 is a deficient number, since it is larger than the sum of its proper divisors (294320150999).

561844159401 is a wasteful number, since it uses less digits than its factorization.

561844159401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 650928.

The product of its (nonzero) digits is 691200, while the sum is 48.

The spelling of 561844159401 in words is "five hundred sixty-one billion, eight hundred forty-four million, one hundred fifty-nine thousand, four hundred one".