16431743530 has 16 divisors (see below), whose sum is σ = 29869983144. Its totient is φ = 6507620800.

The previous prime is 16431743509. The next prime is 16431743543. The reversal of 16431743530 is 3534713461.

It can be written as a sum of positive squares in 4 ways, for example, as 15096791161 + 1334952369 = 122869^2 + 36537^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 16431743530.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8133517 + ... + 8135536.

Almost surely, 2^16431743530 is an apocalyptic number.

16431743530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16431743530 is a deficient number, since it is larger than the sum of its proper divisors (13438239614).

16431743530 is a wasteful number, since it uses less digits than its factorization.

16431743530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16269161.

The product of its (nonzero) digits is 90720, while the sum is 37.

The spelling of 16431743530 in words is "sixteen billion, four hundred thirty-one million, seven hundred forty-three thousand, five hundred thirty".