20469171299 has 2 divisors, whose sum is σ = 20469171300. Its totient is φ = 20469171298.

The previous prime is 20469171271. The next prime is 20469171377. The reversal of 20469171299 is 99217196402.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20469171299 is a prime.

It is not a weakly prime, because it can be changed into another prime (20469171209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10234585649 + 10234585650.

It is an arithmetic number, because the mean of its divisors is an integer number (10234585650).

Almost surely, 2^20469171299 is an apocalyptic number.

20469171299 is a deficient number, since it is larger than the sum of its proper divisors (1).

20469171299 is an equidigital number, since it uses as much as digits as its factorization.

20469171299 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 489888, while the sum is 50.

The spelling of 20469171299 in words is "twenty billion, four hundred sixty-nine million, one hundred seventy-one thousand, two hundred ninety-nine".