32040330581 has 64 divisors (see below), whose sum is σ = 39656128512. Its totient is φ = 25310880000.

The previous prime is 32040330521. The next prime is 32040330599. The reversal of 32040330581 is 18503304023.

It is a de Polignac number, because none of the positive numbers 2^k-32040330581 is a prime.

It is a super-2 number, since 2×32040330581² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32040330521) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 103023416 + ... + 103023726.

It is an arithmetic number, because the mean of its divisors is an integer number (619627008).

Almost surely, 2^32040330581 is an apocalyptic number.

32040330581 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

32040330581 is a deficient number, since it is larger than the sum of its proper divisors (7615797931).

32040330581 is a wasteful number, since it uses less digits than its factorization.

32040330581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 634.

The product of its (nonzero) digits is 8640, while the sum is 29.

The spelling of 32040330581 in words is "thirty-two billion, forty million, three hundred thirty thousand, five hundred eighty-one".