20334030397 has 16 divisors (see below), whose sum is σ = 21010106880. Its totient is φ = 19669657392.

The previous prime is 20334030391. The next prime is 20334030443. The reversal of 20334030397 is 79303043302.

It is not a de Polignac number, because 20334030397 - 2²³ = 20325641789 is a prime.

It is a super-2 number, since 2×20334030397² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20334030391) 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, 4595128 + ... + 4599550.

It is an arithmetic number, because the mean of its divisors is an integer number (1313131680).

Almost surely, 2^20334030397 is an apocalyptic number.

It is an amenable number.

20334030397 is a deficient number, since it is larger than the sum of its proper divisors (676076483).

20334030397 is a wasteful number, since it uses less digits than its factorization.

20334030397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5712.

The product of its (nonzero) digits is 40824, while the sum is 34.

Adding to 20334030397 its reverse (79303043302), we get a palindrome (99637073699).

The spelling of 20334030397 in words is "twenty billion, three hundred thirty-four million, thirty thousand, three hundred ninety-seven".