20323311464504 has 32 divisors (see below), whose sum is σ = 40112230540800. Its totient is φ = 9626728163040.

The previous prime is 20323311464329. The next prime is 20323311464527. The reversal of 20323311464504 is 40546411332302.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

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, 14510999 + ... + 15849785.

It is an arithmetic number, because the mean of its divisors is an integer number (1253507204400).

Almost surely, 2^{20323311464504} is an apocalyptic number.

It is an amenable number.

20323311464504 is a deficient number, since it is larger than the sum of its proper divisors (19788919076296).

20323311464504 is a wasteful number, since it uses less digits than its factorization.

20323311464504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1438683 (or 1438679 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 38.

Adding to 20323311464504 its reverse (40546411332302), we get a palindrome (60869722796806).

The spelling of 20323311464504 in words is "twenty trillion, three hundred twenty-three billion, three hundred eleven million, four hundred sixty-four thousand, five hundred four".