16909386867 has 6 divisors (see below), whose sum is σ = 24424669932. Its totient is φ = 11272924572.

The previous prime is 16909386863. The next prime is 16909386931. The reversal of 16909386867 is 76868390961.

It is not a de Polignac number, because 16909386867 - 2² = 16909386863 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16909386863) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 939410373 + ... + 939410390.

It is an arithmetic number, because the mean of its divisors is an integer number (4070778322).

Almost surely, 2^16909386867 is an apocalyptic number.

16909386867 is a deficient number, since it is larger than the sum of its proper divisors (7515283065).

16909386867 is a wasteful number, since it uses less digits than its factorization.

16909386867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1878820769 (or 1878820766 counting only the distinct ones).

The product of its (nonzero) digits is 23514624, while the sum is 63.

The spelling of 16909386867 in words is "sixteen billion, nine hundred nine million, three hundred eighty-six thousand, eight hundred sixty-seven".