20344202413 has 4 divisors (see below), whose sum is σ = 21540920220. Its totient is φ = 19147484608.

The previous prime is 20344202407. The next prime is 20344202423. The reversal of 20344202413 is 31420244302.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 7385339844 + 12958862569 = 85938^2 + 113837^2 .

It is not a de Polignac number, because 20344202413 - 2⁵ = 20344202381 is a prime.

It is a super-2 number, since 2×20344202413² (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 (20344202423) 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, 598358878 + ... + 598358911.

It is an arithmetic number, because the mean of its divisors is an integer number (5385230055).

Almost surely, 2^20344202413 is an apocalyptic number.

It is an amenable number.

20344202413 is a deficient number, since it is larger than the sum of its proper divisors (1196717807).

20344202413 is a wasteful number, since it uses less digits than its factorization.

20344202413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1196717806.

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 20344202413 its reverse (31420244302), we get a palindrome (51764446715).

The spelling of 20344202413 in words is "twenty billion, three hundred forty-four million, two hundred two thousand, four hundred thirteen".