66097839013 has 2 divisors, whose sum is σ = 66097839014. Its totient is φ = 66097839012.

The previous prime is 66097839007. The next prime is 66097839029. The reversal of 66097839013 is 31093879066.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58737400164 + 7360438849 = 242358^2 + 85793^2 .

It is a cyclic number.

It is not a de Polignac number, because 66097839013 - 2²⁵ = 66064284581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66097839083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33048919506 + 33048919507.

It is an arithmetic number, because the mean of its divisors is an integer number (33048919507).

Almost surely, 2^66097839013 is an apocalyptic number.

It is an amenable number.

66097839013 is a deficient number, since it is larger than the sum of its proper divisors (1).

66097839013 is an equidigital number, since it uses as much as digits as its factorization.

66097839013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1469664, while the sum is 52.

The spelling of 66097839013 in words is "sixty-six billion, ninety-seven million, eight hundred thirty-nine thousand, thirteen".