20315327064 has 32 divisors (see below), whose sum is σ = 50967798720. Its totient is φ = 6747844896.

The previous prime is 20315327059. The next prime is 20315327069. The reversal of 20315327064 is 46072351302.

It is an interprime number because it is at equal distance from previous prime (20315327059) and next prime (20315327069).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20315327069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1488742 + ... + 1502325.

It is an arithmetic number, because the mean of its divisors is an integer number (1592743710).

Almost surely, 2^20315327064 is an apocalyptic number.

20315327064 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20315327064 is an abundant number, since it is smaller than the sum of its proper divisors (30652471656).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20315327064 is a wasteful number, since it uses less digits than its factorization.

20315327064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2991359 (or 2991355 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 33.

Adding to 20315327064 its reverse (46072351302), we get a palindrome (66387678366).

The spelling of 20315327064 in words is "twenty billion, three hundred fifteen million, three hundred twenty-seven thousand, sixty-four".