32561626561 has 32 divisors (see below), whose sum is σ = 35868960000. Its totient is φ = 29440454400.

The previous prime is 32561626541. The next prime is 32561626579. The reversal of 32561626561 is 16562616523.

It is not a de Polignac number, because 32561626561 - 2⁹ = 32561626049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (32561626501) 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, 19052175 + ... + 19053883.

It is an arithmetic number, because the mean of its divisors is an integer number (1120905000).

Almost surely, 2^32561626561 is an apocalyptic number.

It is an amenable number.

32561626561 is a deficient number, since it is larger than the sum of its proper divisors (3307333439).

32561626561 is a wasteful number, since it uses less digits than its factorization.

32561626561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2137.

The product of its digits is 388800, while the sum is 43.

The spelling of 32561626561 in words is "thirty-two billion, five hundred sixty-one million, six hundred twenty-six thousand, five hundred sixty-one".