561398389284 has 24 divisors (see below), whose sum is σ = 1310370563488. Its totient is φ = 187069798080.

The previous prime is 561398389207. The next prime is 561398389303. The reversal of 561398389284 is 482983893165.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7837657 + ... + 7908960.

Almost surely, 2^561398389284 is an apocalyptic number.

It is an amenable number.

561398389284 is an abundant number, since it is smaller than the sum of its proper divisors (748972174204).

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

561398389284 is a wasteful number, since it uses less digits than its factorization.

561398389284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15749595 (or 15749593 counting only the distinct ones).

The product of its digits is 89579520, while the sum is 66.

The spelling of 561398389284 in words is "five hundred sixty-one billion, three hundred ninety-eight million, three hundred eighty-nine thousand, two hundred eighty-four".