32643220641 has 16 divisors (see below), whose sum is σ = 44152490880. Its totient is φ = 21448259840.

The previous prime is 32643220601. The next prime is 32643220657. The reversal of 32643220641 is 14602234623.

It is a cyclic number.

It is not a de Polignac number, because 32643220641 - 2¹⁰ = 32643219617 is a prime.

It is not an unprimeable number, because it can be changed into a prime (32643220601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 633151 + ... + 682763.

It is an arithmetic number, because the mean of its divisors is an integer number (2759530680).

Almost surely, 2^32643220641 is an apocalyptic number.

It is an amenable number.

32643220641 is a deficient number, since it is larger than the sum of its proper divisors (11509270239).

32643220641 is a wasteful number, since it uses less digits than its factorization.

32643220641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52776.

The product of its (nonzero) digits is 41472, while the sum is 33.

The spelling of 32643220641 in words is "thirty-two billion, six hundred forty-three million, two hundred twenty thousand, six hundred forty-one".