320891701963 has 16 divisors (see below), whose sum is σ = 367337558016. Its totient is φ = 274597223040.

The previous prime is 320891701877. The next prime is 320891701969. The reversal of 320891701963 is 369107198023.

It is not a de Polignac number, because 320891701963 - 2⁹ = 320891701451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320891701969) 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, 13035795 + ... + 13060387.

It is an arithmetic number, because the mean of its divisors is an integer number (22958597376).

Almost surely, 2^320891701963 is an apocalyptic number.

320891701963 is a deficient number, since it is larger than the sum of its proper divisors (46445856053).

320891701963 is a wasteful number, since it uses less digits than its factorization.

320891701963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27594.

The product of its (nonzero) digits is 489888, while the sum is 49.

Adding to 320891701963 its reverse (369107198023), we get a palindrome (689998899986).

The spelling of 320891701963 in words is "three hundred twenty billion, eight hundred ninety-one million, seven hundred one thousand, nine hundred sixty-three".