42056600569 has 2 divisors, whose sum is σ = 42056600570. Its totient is φ = 42056600568.

The previous prime is 42056600539. The next prime is 42056600617. The reversal of 42056600569 is 96500665024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32014155625 + 10042444944 = 178925^2 + 100212^2 .

It is a cyclic number.

It is not a de Polignac number, because 42056600569 - 2²¹ = 42054503417 is a prime.

It is a super-2 number, since 2×42056600569² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42056600519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21028300284 + 21028300285.

It is an arithmetic number, because the mean of its divisors is an integer number (21028300285).

Almost surely, 2^42056600569 is an apocalyptic number.

It is an amenable number.

42056600569 is a deficient number, since it is larger than the sum of its proper divisors (1).

42056600569 is an equidigital number, since it uses as much as digits as its factorization.

42056600569 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 388800, while the sum is 43.

The spelling of 42056600569 in words is "forty-two billion, fifty-six million, six hundred thousand, five hundred sixty-nine".