133194245879 has 2 divisors, whose sum is σ = 133194245880. Its totient is φ = 133194245878.

The previous prime is 133194245867. The next prime is 133194245893. The reversal of 133194245879 is 978542491331.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133194245879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133194245839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66597122939 + 66597122940.

It is an arithmetic number, because the mean of its divisors is an integer number (66597122940).

Almost surely, 2^133194245879 is an apocalyptic number.

133194245879 is a deficient number, since it is larger than the sum of its proper divisors (1).

133194245879 is an equidigital number, since it uses as much as digits as its factorization.

133194245879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6531840, while the sum is 56.

The spelling of 133194245879 in words is "one hundred thirty-three billion, one hundred ninety-four million, two hundred forty-five thousand, eight hundred seventy-nine".