32991448357 has 16 divisors (see below), whose sum is σ = 37982926080. Its totient is φ = 28070235648.

The previous prime is 32991448349. The next prime is 32991448381. The reversal of 32991448357 is 75384419923.

It is not a de Polignac number, because 32991448357 - 2³ = 32991448349 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 32991448298 and 32991448307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32991448337) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 578133 + ... + 632629.

It is an arithmetic number, because the mean of its divisors is an integer number (2373932880).

Almost surely, 2^32991448357 is an apocalyptic number.

It is an amenable number.

32991448357 is a deficient number, since it is larger than the sum of its proper divisors (4991477723).

32991448357 is a wasteful number, since it uses less digits than its factorization.

32991448357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55140.

The product of its digits is 6531840, while the sum is 55.

The spelling of 32991448357 in words is "thirty-two billion, nine hundred ninety-one million, four hundred forty-eight thousand, three hundred fifty-seven".