16869438287 has 32 divisors (see below), whose sum is σ = 19448217600. Its totient is φ = 14502457728.

The previous prime is 16869438277. The next prime is 16869438347. The reversal of 16869438287 is 78283496861.

It is a cyclic number.

It is not a de Polignac number, because 16869438287 - 2⁸ = 16869438031 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16869438227) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13188914 + ... + 13190192.

It is an arithmetic number, because the mean of its divisors is an integer number (607756800).

Almost surely, 2^16869438287 is an apocalyptic number.

16869438287 is a deficient number, since it is larger than the sum of its proper divisors (2578779313).

16869438287 is a wasteful number, since it uses less digits than its factorization.

16869438287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2175.

The product of its digits is 27869184, while the sum is 62.

The spelling of 16869438287 in words is "sixteen billion, eight hundred sixty-nine million, four hundred thirty-eight thousand, two hundred eighty-seven".