20445269099 has 2 divisors, whose sum is σ = 20445269100. Its totient is φ = 20445269098.

The previous prime is 20445269093. The next prime is 20445269129. The reversal of 20445269099 is 99096254402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20445269099 - 2²⁰ = 20444220523 is a prime.

It is not a weakly prime, because it can be changed into another prime (20445269093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10222634549 + 10222634550.

It is an arithmetic number, because the mean of its divisors is an integer number (10222634550).

Almost surely, 2^20445269099 is an apocalyptic number.

20445269099 is a deficient number, since it is larger than the sum of its proper divisors (1).

20445269099 is an equidigital number, since it uses as much as digits as its factorization.

20445269099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1399680, while the sum is 50.

The spelling of 20445269099 in words is "twenty billion, four hundred forty-five million, two hundred sixty-nine thousand, ninety-nine".