20343021413 has 16 divisors (see below), whose sum is σ = 24723619200. Its totient is φ = 16482406080.

The previous prime is 20343021397. The next prime is 20343021443. The reversal of 20343021413 is 31412034302.

It is a cyclic number.

It is not a de Polignac number, because 20343021413 - 2⁴ = 20343021397 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 (20343021443) 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, 2448593 + ... + 2456886.

It is an arithmetic number, because the mean of its divisors is an integer number (1545226200).

Almost surely, 2^20343021413 is an apocalyptic number.

It is an amenable number.

20343021413 is a deficient number, since it is larger than the sum of its proper divisors (4380597787).

20343021413 is a wasteful number, since it uses less digits than its factorization.

20343021413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4905532.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 20343021413 its reverse (31412034302), we get a palindrome (51755055715).

The spelling of 20343021413 in words is "twenty billion, three hundred forty-three million, twenty-one thousand, four hundred thirteen".