216690314189679 has 12 divisors (see below), whose sum is σ = 341451404177832. Its totient is φ = 131327463145200.

The previous prime is 216690314189653. The next prime is 216690314189683. The reversal of 216690314189679 is 976981413096612.

It is a happy number.

216690314189679 is a `hidden beast` number, since 2 + 1 + 6 + 6 + 90 + 31 + 418 + 96 + 7 + 9 = 666.

It is not a de Polignac number, because 216690314189679 - 2⁷ = 216690314189551 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216690314189639) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1094395526112 + ... + 1094395526309.

It is an arithmetic number, because the mean of its divisors is an integer number (28454283681486).

Almost surely, 2^{216690314189679} is an apocalyptic number.

216690314189679 is a deficient number, since it is larger than the sum of its proper divisors (124761089988153).

216690314189679 is a wasteful number, since it uses less digits than its factorization.

216690314189679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2188791052438 (or 2188791052435 counting only the distinct ones).

The product of its (nonzero) digits is 211631616, while the sum is 72.

The spelling of 216690314189679 in words is "two hundred sixteen trillion, six hundred ninety billion, three hundred fourteen million, one hundred eighty-nine thousand, six hundred seventy-nine".