11829790919209 has 2 divisors, whose sum is σ = 11829790919210. Its totient is φ = 11829790919208.

The previous prime is 11829790919137. The next prime is 11829790919267. The reversal of 11829790919209 is 90291909792811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9726464337984 + 2103326581225 = 3118728^2 + 1450285^2 .

It is a cyclic number.

It is not a de Polignac number, because 11829790919209 - 2³¹ = 11827643435561 is a prime.

It is not a weakly prime, because it can be changed into another prime (11829790919269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5914895459604 + 5914895459605.

It is an arithmetic number, because the mean of its divisors is an integer number (5914895459605).

Almost surely, 2^{11829790919209} is an apocalyptic number.

It is an amenable number.

11829790919209 is a deficient number, since it is larger than the sum of its proper divisors (1).

11829790919209 is an equidigital number, since it uses as much as digits as its factorization.

11829790919209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13226976, while the sum is 67.

The spelling of 11829790919209 in words is "eleven trillion, eight hundred twenty-nine billion, seven hundred ninety million, nine hundred nineteen thousand, two hundred nine".