20344458269 has 2 divisors, whose sum is σ = 20344458270. Its totient is φ = 20344458268.

The previous prime is 20344458227. The next prime is 20344458287. The reversal of 20344458269 is 96285444302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12911776900 + 7432681369 = 113630^2 + 86213^2 .

It is a cyclic number.

It is not a de Polignac number, because 20344458269 - 2³² = 16049490973 is a prime.

It is a super-2 number, since 2×20344458269² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20344458209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10172229134 + 10172229135.

It is an arithmetic number, because the mean of its divisors is an integer number (10172229135).

Almost surely, 2^20344458269 is an apocalyptic number.

It is an amenable number.

20344458269 is a deficient number, since it is larger than the sum of its proper divisors (1).

20344458269 is an equidigital number, since it uses as much as digits as its factorization.

20344458269 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1658880, while the sum is 47.

The spelling of 20344458269 in words is "twenty billion, three hundred forty-four million, four hundred fifty-eight thousand, two hundred sixty-nine".