561764308444 has 12 divisors (see below), whose sum is σ = 983094623224. Its totient is φ = 280880130384.

The previous prime is 561764308433. The next prime is 561764308493. The reversal of 561764308444 is 444803467165.

It is a super-2 number, since 2×561764308444² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 561764308391 and 561764308400.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 241162 + ... + 1087054.

Almost surely, 2^561764308444 is an apocalyptic number.

It is an amenable number.

561764308444 is a deficient number, since it is larger than the sum of its proper divisors (421330314780).

561764308444 is a wasteful number, since it uses less digits than its factorization.

561764308444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1011924 (or 1011922 counting only the distinct ones).

The product of its (nonzero) digits is 7741440, while the sum is 52.

The spelling of 561764308444 in words is "five hundred sixty-one billion, seven hundred sixty-four million, three hundred eight thousand, four hundred forty-four".