561042242240165 has 8 divisors (see below), whose sum is σ = 769429360786560. Its totient is φ = 384714680393232.

The previous prime is 561042242240131. The next prime is 561042242240177.

It is a happy number.

561042242240165 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-561042242240165 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8014889174825 + ... + 8014889174894.

It is an arithmetic number, because the mean of its divisors is an integer number (96178670098320).

Almost surely, 2^{561042242240165} is an apocalyptic number.

It is an amenable number.

561042242240165 is a deficient number, since it is larger than the sum of its proper divisors (208387118546395).

561042242240165 is a wasteful number, since it uses less digits than its factorization.

561042242240165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16029778349731.

The product of its (nonzero) digits is 921600, while the sum is 44.

The spelling of 561042242240165 in words is "five hundred sixty-one trillion, forty-two billion, two hundred forty-two million, two hundred forty thousand, one hundred sixty-five".