133938399441 has 24 divisors (see below), whose sum is σ = 224337598912. Its totient is φ = 69578388000.

The previous prime is 133938399431. The next prime is 133938399481. The reversal of 133938399441 is 144993839331.

It is not a de Polignac number, because 133938399441 - 2²² = 133934205137 is a prime.

It is a super-2 number, since 2×133938399441² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (133938399401) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26352910 + ... + 26357991.

Almost surely, 2^133938399441 is an apocalyptic number.

133938399441 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

133938399441 is a deficient number, since it is larger than the sum of its proper divisors (90399199471).

133938399441 is a wasteful number, since it uses less digits than its factorization.

133938399441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52710933 (or 52710922 counting only the distinct ones).

The product of its digits is 7558272, while the sum is 57.

The spelling of 133938399441 in words is "one hundred thirty-three billion, nine hundred thirty-eight million, three hundred ninety-nine thousand, four hundred forty-one".