133921868939 has 2 divisors, whose sum is σ = 133921868940. Its totient is φ = 133921868938.

The previous prime is 133921868929. The next prime is 133921869121. The reversal of 133921868939 is 939868129331.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 133921868939 - 2³² = 129626901643 is a prime.

It is a super-2 number, since 2×133921868939² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (133921868929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66960934469 + 66960934470.

It is an arithmetic number, because the mean of its divisors is an integer number (66960934470).

Almost surely, 2^133921868939 is an apocalyptic number.

133921868939 is a deficient number, since it is larger than the sum of its proper divisors (1).

133921868939 is an equidigital number, since it uses as much as digits as its factorization.

133921868939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15116544, while the sum is 62.

The spelling of 133921868939 in words is "one hundred thirty-three billion, nine hundred twenty-one million, eight hundred sixty-eight thousand, nine hundred thirty-nine".