320078297849 has 4 divisors (see below), whose sum is σ = 320079509136. Its totient is φ = 320077086564.

The previous prime is 320078297789. The next prime is 320078297863. The reversal of 320078297849 is 948792870023.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 320078297849 - 2⁸ = 320078297593 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (320078297879) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21419 + ... + 800384.

It is an arithmetic number, because the mean of its divisors is an integer number (80019877284).

Almost surely, 2^320078297849 is an apocalyptic number.

It is an amenable number.

320078297849 is a deficient number, since it is larger than the sum of its proper divisors (1211287).

320078297849 is an equidigital number, since it uses as much as digits as its factorization.

320078297849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1211286.

The product of its (nonzero) digits is 12192768, while the sum is 59.

The spelling of 320078297849 in words is "three hundred twenty billion, seventy-eight million, two hundred ninety-seven thousand, eight hundred forty-nine".