320428452863 has 4 divisors (see below), whose sum is σ = 320698402200. Its totient is φ = 320158503528.

The previous prime is 320428452833. The next prime is 320428452901. The reversal of 320428452863 is 368254824023.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 368254824023 = 499607 ⋅737089.

It is a cyclic number.

It is not a de Polignac number, because 320428452863 - 2³² = 316133485567 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320428452833) 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, 134972888 + ... + 134975261.

It is an arithmetic number, because the mean of its divisors is an integer number (80174600550).

Almost surely, 2^320428452863 is an apocalyptic number.

320428452863 is a deficient number, since it is larger than the sum of its proper divisors (269949337).

320428452863 is a wasteful number, since it uses less digits than its factorization.

320428452863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269949336.

The product of its (nonzero) digits is 2211840, while the sum is 47.

The spelling of 320428452863 in words is "three hundred twenty billion, four hundred twenty-eight million, four hundred fifty-two thousand, eight hundred sixty-three".