132581993628 has 36 divisors (see below), whose sum is σ = 359865412872. Its totient is φ = 37880569440.

The previous prime is 132581993573. The next prime is 132581993689. The reversal of 132581993628 is 826399185231.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 112739203 + ... + 112740378.

Almost surely, 2^132581993628 is an apocalyptic number.

It is an amenable number.

132581993628 is an abundant number, since it is smaller than the sum of its proper divisors (227283419244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

132581993628 is a wasteful number, since it uses less digits than its factorization.

132581993628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225479602 (or 225479593 counting only the distinct ones).

The product of its digits is 5598720, while the sum is 57.

The spelling of 132581993628 in words is "one hundred thirty-two billion, five hundred eighty-one million, nine hundred ninety-three thousand, six hundred twenty-eight".