212665464679 has 2 divisors, whose sum is σ = 212665464680. Its totient is φ = 212665464678.

The previous prime is 212665464631. The next prime is 212665464691. The reversal of 212665464679 is 976464566212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212665464679 - 2¹¹ = 212665462631 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212665464779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106332732339 + 106332732340.

It is an arithmetic number, because the mean of its divisors is an integer number (106332732340).

Almost surely, 2^212665464679 is an apocalyptic number.

212665464679 is a deficient number, since it is larger than the sum of its proper divisors (1).

212665464679 is an equidigital number, since it uses as much as digits as its factorization.

212665464679 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26127360, while the sum is 58.

The spelling of 212665464679 in words is "two hundred twelve billion, six hundred sixty-five million, four hundred sixty-four thousand, six hundred seventy-nine".