133452321381 has 12 divisors (see below), whose sum is σ = 193514523852. Its totient is φ = 88622032896.

The previous prime is 133452321361. The next prime is 133452321407. The reversal of 133452321381 is 183123254331.

133452321381 is a `hidden beast` number, since 1 + 3 + 3 + 45 + 232 + 1 + 381 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 124897921281 + 8554400100 = 353409^2 + 92490^2 .

It is not a de Polignac number, because 133452321381 - 2⁷ = 133452321253 is a prime.

It is a super-2 number, since 2×133452321381² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133452321311) 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 11 ways as a sum of consecutive naturals, for example, 28846006 + ... + 28850631.

It is an arithmetic number, because the mean of its divisors is an integer number (16126210321).

Almost surely, 2^133452321381 is an apocalyptic number.

It is an amenable number.

133452321381 is a deficient number, since it is larger than the sum of its proper divisors (60062202471).

133452321381 is a wasteful number, since it uses less digits than its factorization.

133452321381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57696900 (or 57696897 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The spelling of 133452321381 in words is "one hundred thirty-three billion, four hundred fifty-two million, three hundred twenty-one thousand, three hundred eighty-one".