320381693851 has 4 divisors (see below), whose sum is σ = 320482224712. Its totient is φ = 320281162992.

The previous prime is 320381693843. The next prime is 320381693897. The reversal of 320381693851 is 158396183023.

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 320381693851 - 2³ = 320381693843 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 320381693795 and 320381693804.

It is not an unprimeable number, because it can be changed into a prime (320381693351) 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, 50260650 + ... + 50267023.

It is an arithmetic number, because the mean of its divisors is an integer number (80120556178).

Almost surely, 2^320381693851 is an apocalyptic number.

320381693851 is a deficient number, since it is larger than the sum of its proper divisors (100530861).

320381693851 is a wasteful number, since it uses less digits than its factorization.

320381693851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100530860.

The product of its (nonzero) digits is 933120, while the sum is 49.

The spelling of 320381693851 in words is "three hundred twenty billion, three hundred eighty-one million, six hundred ninety-three thousand, eight hundred fifty-one".