320445650387 has 2 divisors, whose sum is σ = 320445650388. Its totient is φ = 320445650386.

The previous prime is 320445650383. The next prime is 320445650407. The reversal of 320445650387 is 783056544023.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 320445650387 - 2² = 320445650383 is a prime.

It is not a weakly prime, because it can be changed into another prime (320445650381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160222825193 + 160222825194.

It is an arithmetic number, because the mean of its divisors is an integer number (160222825194).

Almost surely, 2^320445650387 is an apocalyptic number.

320445650387 is a deficient number, since it is larger than the sum of its proper divisors (1).

320445650387 is an equidigital number, since it uses as much as digits as its factorization.

320445650387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2419200, while the sum is 47.

The spelling of 320445650387 in words is "three hundred twenty billion, four hundred forty-five million, six hundred fifty thousand, three hundred eighty-seven".