565073781993 has 12 divisors (see below), whose sum is σ = 932820211648. Its totient is φ = 322899303960.

The previous prime is 565073781971. The next prime is 565073782067. The reversal of 565073781993 is 399187370565.

565073781993 is a `hidden beast` number, since 5 + 6 + 507 + 37 + 8 + 1 + 9 + 93 = 666.

It is not a de Polignac number, because 565073781993 - 2⁸ = 565073781737 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63), and also a Moran number because the ratio is a prime number: 8969425111 = 565073781993 / (5 + 6 + 5 + 0 + 7 + 3 + 7 + 8 + 1 + 9 + 9 + 3).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 565073781993.

It is not an unprimeable number, because it can be changed into a prime (565073781953) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4484712493 + ... + 4484712618.

Almost surely, 2^565073781993 is an apocalyptic number.

It is an amenable number.

565073781993 is a deficient number, since it is larger than the sum of its proper divisors (367746429655).

565073781993 is a wasteful number, since it uses less digits than its factorization.

565073781993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8969425124 (or 8969425121 counting only the distinct ones).

The product of its (nonzero) digits is 42865200, while the sum is 63.

The spelling of 565073781993 in words is "five hundred sixty-five billion, seventy-three million, seven hundred eighty-one thousand, nine hundred ninety-three".