16429431673 has 2 divisors, whose sum is σ = 16429431674. Its totient is φ = 16429431672.

The previous prime is 16429431619. The next prime is 16429431731. The reversal of 16429431673 is 37613492461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16294011904 + 135419769 = 127648^2 + 11637^2 .

It is a cyclic number.

It is not a de Polignac number, because 16429431673 - 2²⁵ = 16395877241 is a prime.

It is not a weakly prime, because it can be changed into another prime (16429401673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8214715836 + 8214715837.

It is an arithmetic number, because the mean of its divisors is an integer number (8214715837).

Almost surely, 2^16429431673 is an apocalyptic number.

It is an amenable number.

16429431673 is a deficient number, since it is larger than the sum of its proper divisors (1).

16429431673 is an equidigital number, since it uses as much as digits as its factorization.

16429431673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 653184, while the sum is 46.

The spelling of 16429431673 in words is "sixteen billion, four hundred twenty-nine million, four hundred thirty-one thousand, six hundred seventy-three".