133195894379831 has 2 divisors, whose sum is σ = 133195894379832. Its totient is φ = 133195894379830.

The previous prime is 133195894379773. The next prime is 133195894379879. The reversal of 133195894379831 is 138973498591331.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 133195894379831 - 2¹⁸ = 133195894117687 is a prime.

It is a super-2 number, since 2×133195894379831² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133195894379531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66597947189915 + 66597947189916.

It is an arithmetic number, because the mean of its divisors is an integer number (66597947189916).

Almost surely, 2^{133195894379831} is an apocalyptic number.

133195894379831 is a deficient number, since it is larger than the sum of its proper divisors (1).

133195894379831 is an equidigital number, since it uses as much as digits as its factorization.

133195894379831 is an evil number, because the sum of its binary digits is even.

The product of its digits is 529079040, while the sum is 74.

The spelling of 133195894379831 in words is "one hundred thirty-three trillion, one hundred ninety-five billion, eight hundred ninety-four million, three hundred seventy-nine thousand, eight hundred thirty-one".