561418056040 has 32 divisors (see below), whose sum is σ = 1274996155680. Its totient is φ = 222468461632.

The previous prime is 561418056011. The next prime is 561418056103. The reversal of 561418056040 is 40650814165.

561418056040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 561418055984 and 561418056002.

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, 65581942 + ... + 65590501.

It is an arithmetic number, because the mean of its divisors is an integer number (39843629865).

Almost surely, 2^561418056040 is an apocalyptic number.

It is an amenable number.

561418056040 is an abundant number, since it is smaller than the sum of its proper divisors (713578099640).

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

561418056040 is a wasteful number, since it uses less digits than its factorization.

561418056040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131172561 (or 131172557 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 40.

The spelling of 561418056040 in words is "five hundred sixty-one billion, four hundred eighteen million, fifty-six thousand, forty".