16390787867 has 2 divisors, whose sum is σ = 16390787868. Its totient is φ = 16390787866.

The previous prime is 16390787851. The next prime is 16390787887. The reversal of 16390787867 is 76878709361.

It is a weak prime.

It is an emirp because it is prime and its reverse (76878709361) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16390787867 - 2⁴ = 16390787851 is a prime.

It is not a weakly prime, because it can be changed into another prime (16390787837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8195393933 + 8195393934.

It is an arithmetic number, because the mean of its divisors is an integer number (8195393934).

Almost surely, 2^16390787867 is an apocalyptic number.

16390787867 is a deficient number, since it is larger than the sum of its proper divisors (1).

16390787867 is an equidigital number, since it uses as much as digits as its factorization.

16390787867 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21337344, while the sum is 62.

The spelling of 16390787867 in words is "sixteen billion, three hundred ninety million, seven hundred eighty-seven thousand, eight hundred sixty-seven".