133530640532 has 24 divisors (see below), whose sum is σ = 235854908520. Its totient is φ = 66143692800.

The previous prime is 133530640517. The next prime is 133530640559. The reversal of 133530640532 is 235046035331.

It can be written as a sum of positive squares in 4 ways, for example, as 40141725316 + 93388915216 = 200354^2 + 305596^2 .

It is a junction number, because it is equal to n+sod(n) for n = 133530640492 and 133530640501.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4054532 + ... + 4087332.

It is an arithmetic number, because the mean of its divisors is an integer number (9827287855).

Almost surely, 2^133530640532 is an apocalyptic number.

It is an amenable number.

133530640532 is a deficient number, since it is larger than the sum of its proper divisors (102324267988).

133530640532 is a wasteful number, since it uses less digits than its factorization.

133530640532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42251 (or 42249 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 35.

Adding to 133530640532 its reverse (235046035331), we get a palindrome (368576675863).

The spelling of 133530640532 in words is "one hundred thirty-three billion, five hundred thirty million, six hundred forty thousand, five hundred thirty-two".