561454899486 has 16 divisors (see below), whose sum is σ = 1209287475984. Its totient is φ = 172755353664.

The previous prime is 561454899449. The next prime is 561454899493. The reversal of 561454899486 is 684998454165.

It is a self number, because there is not a number n which added to its sum of digits gives 561454899486.

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, 3599069791 + ... + 3599069946.

It is an arithmetic number, because the mean of its divisors is an integer number (75580467249).

Almost surely, 2^561454899486 is an apocalyptic number.

561454899486 is an abundant number, since it is smaller than the sum of its proper divisors (647832576498).

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

561454899486 is a wasteful number, since it uses less digits than its factorization.

561454899486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7198139755.

The product of its digits is 298598400, while the sum is 69.

The spelling of 561454899486 in words is "five hundred sixty-one billion, four hundred fifty-four million, eight hundred ninety-nine thousand, four hundred eighty-six".