561393253015 has 32 divisors (see below), whose sum is σ = 831088097280. Its totient is φ = 355520989824.

The previous prime is 561393252991. The next prime is 561393253133. The reversal of 561393253015 is 510352393165.

561393253015 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-561393253015 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12000499 + ... + 12047188.

It is an arithmetic number, because the mean of its divisors is an integer number (25971503040).

Almost surely, 2^561393253015 is an apocalyptic number.

561393253015 is a deficient number, since it is larger than the sum of its proper divisors (269694844265).

561393253015 is a wasteful number, since it uses less digits than its factorization.

561393253015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24047751.

The product of its (nonzero) digits is 364500, while the sum is 43.

The spelling of 561393253015 in words is "five hundred sixty-one billion, three hundred ninety-three million, two hundred fifty-three thousand, fifteen".