320693989385 has 16 divisors (see below), whose sum is σ = 479791527552. Its totient is φ = 199913136000.

The previous prime is 320693989381. The next prime is 320693989391. The reversal of 320693989385 is 583989396023.

It is not a de Polignac number, because 320693989385 - 2² = 320693989381 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320693989381) 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, 416485316 + ... + 416486085.

It is an arithmetic number, because the mean of its divisors is an integer number (29986970472).

Almost surely, 2^320693989385 is an apocalyptic number.

320693989385 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

320693989385 is a deficient number, since it is larger than the sum of its proper divisors (159097538167).

320693989385 is a wasteful number, since it uses less digits than its factorization.

320693989385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 832971424.

The product of its (nonzero) digits is 75582720, while the sum is 65.

The spelling of 320693989385 in words is "three hundred twenty billion, six hundred ninety-three million, nine hundred eighty-nine thousand, three hundred eighty-five".