16323812645 has 16 divisors (see below), whose sum is σ = 22809340800. Its totient is φ = 10982272704.

The previous prime is 16323812633. The next prime is 16323812657. The reversal of 16323812645 is 54621832361.

It is an interprime number because it is at equal distance from previous prime (16323812633) and next prime (16323812657).

It is a cyclic number.

It is not a de Polignac number, because 16323812645 - 2¹² = 16323808549 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4398095 + ... + 4401804.

It is an arithmetic number, because the mean of its divisors is an integer number (1425583800).

Almost surely, 2^16323812645 is an apocalyptic number.

It is an amenable number.

16323812645 is a deficient number, since it is larger than the sum of its proper divisors (6485528155).

16323812645 is an equidigital number, since it uses as much as digits as its factorization.

16323812645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8799964.

The product of its digits is 207360, while the sum is 41.

The spelling of 16323812645 in words is "sixteen billion, three hundred twenty-three million, eight hundred twelve thousand, six hundred forty-five".