16431135716 has 18 divisors (see below), whose sum is σ = 29711979990. Its totient is φ = 7950547680.

The previous prime is 16431135701. The next prime is 16431135719. The reversal of 16431135716 is 61753113461.

It can be written as a sum of positive squares in only one way, i.e., 11213962816 + 5217172900 = 105896^2 + 72230^2 .

It is a super-2 number, since 2×16431135716² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16431135716.

It is not an unprimeable number, because it can be changed into a prime (16431135719) 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, 2133401 + ... + 2141088.

It is an arithmetic number, because the mean of its divisors is an integer number (1650665555).

Almost surely, 2^16431135716 is an apocalyptic number.

It is an amenable number.

16431135716 is a deficient number, since it is larger than the sum of its proper divisors (13280844274).

16431135716 is a wasteful number, since it uses less digits than its factorization.

16431135716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4274555 (or 4274522 counting only the distinct ones).

The product of its digits is 45360, while the sum is 38.

The spelling of 16431135716 in words is "sixteen billion, four hundred thirty-one million, one hundred thirty-five thousand, seven hundred sixteen".