566699740129 has 2 divisors, whose sum is σ = 566699740130. Its totient is φ = 566699740128.

The previous prime is 566699740081. The next prime is 566699740153. The reversal of 566699740129 is 921047996665.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 563603040225 + 3096699904 = 750735^2 + 55648^2 .

It is a cyclic number.

It is not a de Polignac number, because 566699740129 - 2¹³ = 566699731937 is a prime.

It is a super-2 number, since 2×566699740129² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (566699740729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 283349870064 + 283349870065.

It is an arithmetic number, because the mean of its divisors is an integer number (283349870065).

Almost surely, 2^566699740129 is an apocalyptic number.

It is an amenable number.

566699740129 is a deficient number, since it is larger than the sum of its proper divisors (1).

566699740129 is an equidigital number, since it uses as much as digits as its factorization.

566699740129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 44089920, while the sum is 64.

The spelling of 566699740129 in words is "five hundred sixty-six billion, six hundred ninety-nine million, seven hundred forty thousand, one hundred twenty-nine".