216930233479 has 2 divisors, whose sum is σ = 216930233480. Its totient is φ = 216930233478.

The previous prime is 216930233459. The next prime is 216930233537. The reversal of 216930233479 is 974332039612.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 216930233479 - 2²³ = 216921844871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216930233419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108465116739 + 108465116740.

It is an arithmetic number, because the mean of its divisors is an integer number (108465116740).

Almost surely, 2^216930233479 is an apocalyptic number.

216930233479 is a deficient number, since it is larger than the sum of its proper divisors (1).

216930233479 is an equidigital number, since it uses as much as digits as its factorization.

216930233479 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1469664, while the sum is 49.

The spelling of 216930233479 in words is "two hundred sixteen billion, nine hundred thirty million, two hundred thirty-three thousand, four hundred seventy-nine".