612716591867 has 2 divisors, whose sum is σ = 612716591868. Its totient is φ = 612716591866.

The previous prime is 612716591821. The next prime is 612716591897. The reversal of 612716591867 is 768195617216.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 612716591867 - 2⁸ = 612716591611 is a prime.

It is a super-2 number, since 2×612716591867² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (612716591897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306358295933 + 306358295934.

It is an arithmetic number, because the mean of its divisors is an integer number (306358295934).

Almost surely, 2^612716591867 is an apocalyptic number.

612716591867 is a deficient number, since it is larger than the sum of its proper divisors (1).

612716591867 is an equidigital number, since it uses as much as digits as its factorization.

612716591867 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7620480, while the sum is 59.

The spelling of 612716591867 in words is "six hundred twelve billion, seven hundred sixteen million, five hundred ninety-one thousand, eight hundred sixty-seven".