20320024463 has 4 divisors (see below), whose sum is σ = 20320554408. Its totient is φ = 20319494520.

The previous prime is 20320024457. The next prime is 20320024481. The reversal of 20320024463 is 36442002302.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20320024463 - 2¹² = 20320020367 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20320024423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 202556 + ... + 285777.

It is an arithmetic number, because the mean of its divisors is an integer number (5080138602).

Almost surely, 2^20320024463 is an apocalyptic number.

20320024463 is a deficient number, since it is larger than the sum of its proper divisors (529945).

20320024463 is an equidigital number, since it uses as much as digits as its factorization.

20320024463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529944.

The product of its (nonzero) digits is 6912, while the sum is 26.

Adding to 20320024463 its reverse (36442002302), we get a palindrome (56762026765).

The spelling of 20320024463 in words is "twenty billion, three hundred twenty million, twenty-four thousand, four hundred sixty-three".