612665566207 has 2 divisors, whose sum is σ = 612665566208. Its totient is φ = 612665566206.

The previous prime is 612665566181. The next prime is 612665566241. The reversal of 612665566207 is 702665566216.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 612665566207 - 2³⁵ = 578305827839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (612665566297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306332783103 + 306332783104.

It is an arithmetic number, because the mean of its divisors is an integer number (306332783104).

Almost surely, 2^612665566207 is an apocalyptic number.

612665566207 is a deficient number, since it is larger than the sum of its proper divisors (1).

612665566207 is an equidigital number, since it uses as much as digits as its factorization.

612665566207 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5443200, while the sum is 52.

Subtracting 612665566207 from its reverse (702665566216), we obtain a palindrome (90000000009).

The spelling of 612665566207 in words is "six hundred twelve billion, six hundred sixty-five million, five hundred sixty-six thousand, two hundred seven".