216762358979 has 2 divisors, whose sum is σ = 216762358980. Its totient is φ = 216762358978.

The previous prime is 216762358957. The next prime is 216762359057. The reversal of 216762358979 is 979853267612.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-216762358979 is a prime.

It is not a weakly prime, because it can be changed into another prime (216762358079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108381179489 + 108381179490.

It is an arithmetic number, because the mean of its divisors is an integer number (108381179490).

Almost surely, 2^216762358979 is an apocalyptic number.

216762358979 is a deficient number, since it is larger than the sum of its proper divisors (1).

216762358979 is an equidigital number, since it uses as much as digits as its factorization.

216762358979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 68584320, while the sum is 65.

The spelling of 216762358979 in words is "two hundred sixteen billion, seven hundred sixty-two million, three hundred fifty-eight thousand, nine hundred seventy-nine".