564765661672 has 16 divisors (see below), whose sum is σ = 1058990848740. Its totient is φ = 282368102016.

The previous prime is 564765661643. The next prime is 564765661699. The reversal of 564765661672 is 276166567465.

It can be written as a sum of positive squares in 2 ways, for example, as 462228655876 + 102537005796 = 679874^2 + 320214^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 564765661672.

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, 1677283 + ... + 1985650.

Almost surely, 2^564765661672 is an apocalyptic number.

It is an amenable number.

564765661672 is a deficient number, since it is larger than the sum of its proper divisors (494225187068).

564765661672 is a wasteful number, since it uses less digits than its factorization.

564765661672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3682212 (or 3682208 counting only the distinct ones).

The product of its digits is 76204800, while the sum is 61.

The spelling of 564765661672 in words is "five hundred sixty-four billion, seven hundred sixty-five million, six hundred sixty-one thousand, six hundred seventy-two".