32961091681 has 32 divisors (see below), whose sum is σ = 40557404160. Its totient is φ = 26156281536.

The previous prime is 32961091673. The next prime is 32961091741. The reversal of 32961091681 is 18619016923.

It is not a de Polignac number, because 32961091681 - 2³ = 32961091673 is a prime.

It is a super-2 number, since 2×32961091681² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (32961091601) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4540851 + ... + 4548103.

It is an arithmetic number, because the mean of its divisors is an integer number (1267418880).

Almost surely, 2^32961091681 is an apocalyptic number.

It is an amenable number.

32961091681 is a deficient number, since it is larger than the sum of its proper divisors (7596312479).

32961091681 is a wasteful number, since it uses less digits than its factorization.

32961091681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8053.

The product of its (nonzero) digits is 139968, while the sum is 46.

The spelling of 32961091681 in words is "thirty-two billion, nine hundred sixty-one million, ninety-one thousand, six hundred eighty-one".