16431262887 has 16 divisors (see below), whose sum is σ = 23598475488. Its totient is φ = 10109460480.

The previous prime is 16431262819. The next prime is 16431262901. The reversal of 16431262887 is 78826213461.

It is not a de Polignac number, because 16431262887 - 2¹² = 16431258791 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16431262387) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 160087 + ... + 241847.

It is an arithmetic number, because the mean of its divisors is an integer number (1474904718).

Almost surely, 2^16431262887 is an apocalyptic number.

16431262887 is a deficient number, since it is larger than the sum of its proper divisors (7167212601).

16431262887 is a wasteful number, since it uses less digits than its factorization.

16431262887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86930.

The product of its digits is 774144, while the sum is 48.

The spelling of 16431262887 in words is "sixteen billion, four hundred thirty-one million, two hundred sixty-two thousand, eight hundred eighty-seven".