561777838896 has 20 divisors (see below), whose sum is σ = 1451259417272. Its totient is φ = 187259279616.

The previous prime is 561777838883. The next prime is 561777838967. The reversal of 561777838896 is 698838777165.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5851852441 + ... + 5851852536.

Almost surely, 2^561777838896 is an apocalyptic number.

It is an amenable number.

561777838896 is an abundant number, since it is smaller than the sum of its proper divisors (889481578376).

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

561777838896 is a wasteful number, since it uses less digits than its factorization.

561777838896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11703704988 (or 11703704982 counting only the distinct ones).

The product of its digits is 853493760, while the sum is 75.

The spelling of 561777838896 in words is "five hundred sixty-one billion, seven hundred seventy-seven million, eight hundred thirty-eight thousand, eight hundred ninety-six".