320187543215 has 4 divisors (see below), whose sum is σ = 384225051864. Its totient is φ = 256150034568.

The previous prime is 320187543209. The next prime is 320187543223. The reversal of 320187543215 is 512345781023.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 320187543215 - 2⁸ = 320187542959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32018754317 + ... + 32018754326.

It is an arithmetic number, because the mean of its divisors is an integer number (96056262966).

Almost surely, 2^320187543215 is an apocalyptic number.

320187543215 is a deficient number, since it is larger than the sum of its proper divisors (64037508649).

320187543215 is an equidigital number, since it uses as much as digits as its factorization.

320187543215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64037508648.

The product of its (nonzero) digits is 201600, while the sum is 41.

The spelling of 320187543215 in words is "three hundred twenty billion, one hundred eighty-seven million, five hundred forty-three thousand, two hundred fifteen".