133531501912 has 16 divisors (see below), whose sum is σ = 250377369840. Its totient is φ = 66764203296.

The previous prime is 133531501871. The next prime is 133531501913. The reversal of 133531501912 is 219105135331.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133531501913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 226978 + ... + 564430.

It is an arithmetic number, because the mean of its divisors is an integer number (15648585615).

Almost surely, 2^133531501912 is an apocalyptic number.

It is an amenable number.

133531501912 is a deficient number, since it is larger than the sum of its proper divisors (116845867928).

133531501912 is a wasteful number, since it uses less digits than its factorization.

133531501912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386922 (or 386918 counting only the distinct ones).

The product of its (nonzero) digits is 12150, while the sum is 34.

The spelling of 133531501912 in words is "one hundred thirty-three billion, five hundred thirty-one million, five hundred one thousand, nine hundred twelve".