16375344427 has 32 divisors (see below), whose sum is σ = 19192320000. Its totient is φ = 13836251520.

The previous prime is 16375344397. The next prime is 16375344457. The reversal of 16375344427 is 72444357361.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (16375344397) and next prime (16375344457).

It is a de Polignac number, because none of the positive numbers 2^k-16375344427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16375344457) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6422949 + ... + 6425497.

It is an arithmetic number, because the mean of its divisors is an integer number (599760000).

Almost surely, 2^16375344427 is an apocalyptic number.

16375344427 is a deficient number, since it is larger than the sum of its proper divisors (2816975573).

16375344427 is a wasteful number, since it uses less digits than its factorization.

16375344427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3451.

The product of its digits is 1693440, while the sum is 46.

The spelling of 16375344427 in words is "sixteen billion, three hundred seventy-five million, three hundred forty-four thousand, four hundred twenty-seven".