561890690118 has 48 divisors (see below), whose sum is σ = 1224524717520. Its totient is φ = 186206625792.

The previous prime is 561890690113. The next prime is 561890690147. The reversal of 561890690118 is 811096098165.

561890690118 is a `hidden beast` number, since 5 + 618 + 9 + 0 + 6 + 9 + 0 + 1 + 18 = 666.

It is a super-2 number, since 2×561890690118² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561890690113) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5434230 + ... + 5536662.

It is an arithmetic number, because the mean of its divisors is an integer number (25510931615).

Almost surely, 2^561890690118 is an apocalyptic number.

561890690118 is an abundant number, since it is smaller than the sum of its proper divisors (662634027402).

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

561890690118 is a wasteful number, since it uses less digits than its factorization.

561890690118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104213 (or 104210 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 54.

The spelling of 561890690118 in words is "five hundred sixty-one billion, eight hundred ninety million, six hundred ninety thousand, one hundred eighteen".