561761274406770 has 24 divisors (see below), whose sum is σ = 1460579313457836. Its totient is φ = 149803006508448.

The previous prime is 561761274406753. The next prime is 561761274406831. The reversal of 561761274406770 is 77604472167165.

It is a happy number.

561761274406770 is a `hidden beast` number, since 5 + 6 + 1 + 7 + 6 + 127 + 440 + 67 + 7 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 524927530222209 + 36833744184561 = 22911297^2 + 6069081^2 .

It is a junction number, because it is equal to n+sod(n) for n = 561761274406698 and 561761274406707.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3120895968837 + ... + 3120895969016.

Almost surely, 2^{561761274406770} is an apocalyptic number.

561761274406770 is an abundant number, since it is smaller than the sum of its proper divisors (898818039051066).

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

561761274406770 is a wasteful number, since it uses less digits than its factorization.

561761274406770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6241791937866 (or 6241791937863 counting only the distinct ones).

The product of its (nonzero) digits is 82978560, while the sum is 63.

The spelling of 561761274406770 in words is "five hundred sixty-one trillion, seven hundred sixty-one billion, two hundred seventy-four million, four hundred six thousand, seven hundred seventy".