320140889493 has 16 divisors (see below), whose sum is σ = 467548562880. Its totient is φ = 193946068736.

The previous prime is 320140889417. The next prime is 320140889567. The reversal of 320140889493 is 394988041023.

It is a cyclic number.

It is not a de Polignac number, because 320140889493 - 2²⁸ = 319872454037 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320140889413) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108227355 + ... + 108230312.

It is an arithmetic number, because the mean of its divisors is an integer number (29221785180).

Almost surely, 2^320140889493 is an apocalyptic number.

It is an amenable number.

320140889493 is a deficient number, since it is larger than the sum of its proper divisors (147407673387).

320140889493 is a wasteful number, since it uses less digits than its factorization.

320140889493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216457716.

The product of its (nonzero) digits is 1492992, while the sum is 51.

The spelling of 320140889493 in words is "three hundred twenty billion, one hundred forty million, eight hundred eighty-nine thousand, four hundred ninety-three".