561795672786 has 16 divisors (see below), whose sum is σ = 1133534633184. Its totient is φ = 185608009664.

The previous prime is 561795672761. The next prime is 561795672797. The reversal of 561795672786 is 687276597165.

It is a super-2 number, since 2×561795672786² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 561795672786.

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, 414302916 + ... + 414304271.

It is an arithmetic number, because the mean of its divisors is an integer number (70845914574).

Almost surely, 2^561795672786 is an apocalyptic number.

561795672786 is an abundant number, since it is smaller than the sum of its proper divisors (571738960398).

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

561795672786 is a wasteful number, since it uses less digits than its factorization.

561795672786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 828607305.

The product of its digits is 266716800, while the sum is 69.

The spelling of 561795672786 in words is "five hundred sixty-one billion, seven hundred ninety-five million, six hundred seventy-two thousand, seven hundred eighty-six".