20315334521452 has 24 divisors (see below), whose sum is σ = 37611039872000. Its totient is φ = 9574696136016.

The previous prime is 20315334521431. The next prime is 20315334521467. The reversal of 20315334521452 is 25412543351302.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 671610588 + ... + 671640835.

Almost surely, 2^{20315334521452} is an apocalyptic number.

It is an amenable number.

20315334521452 is a deficient number, since it is larger than the sum of its proper divisors (17295705350548).

20315334521452 is a wasteful number, since it uses less digits than its factorization.

20315334521452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1343251645 (or 1343251643 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 40.

Adding to 20315334521452 its reverse (25412543351302), we get a palindrome (45727877872754).

The spelling of 20315334521452 in words is "twenty trillion, three hundred fifteen billion, three hundred thirty-four million, five hundred twenty-one thousand, four hundred fifty-two".