16475378329 has 2 divisors, whose sum is σ = 16475378330. Its totient is φ = 16475378328.

The previous prime is 16475378321. The next prime is 16475378333. The reversal of 16475378329 is 92387357461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9791498304 + 6683880025 = 98952^2 + 81755^2 .

It is a cyclic number.

It is not a de Polignac number, because 16475378329 - 2³ = 16475378321 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16475378329.

It is not a weakly prime, because it can be changed into another prime (16475378321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8237689164 + 8237689165.

It is an arithmetic number, because the mean of its divisors is an integer number (8237689165).

Almost surely, 2^16475378329 is an apocalyptic number.

It is an amenable number.

16475378329 is a deficient number, since it is larger than the sum of its proper divisors (1).

16475378329 is an equidigital number, since it uses as much as digits as its factorization.

16475378329 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7620480, while the sum is 55.

The spelling of 16475378329 in words is "sixteen billion, four hundred seventy-five million, three hundred seventy-eight thousand, three hundred twenty-nine".