32643433641 has 32 divisors (see below), whose sum is σ = 54323232768. Its totient is φ = 16975990080.

The previous prime is 32643433637. The next prime is 32643433649. The reversal of 32643433641 is 14633434623.

It is not a de Polignac number, because 32643433641 - 2² = 32643433637 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 32643433641.

It is not an unprimeable number, because it can be changed into a prime (32643433649) 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, 822681 + ... + 861446.

It is an arithmetic number, because the mean of its divisors is an integer number (1697601024).

Almost surely, 2^32643433641 is an apocalyptic number.

It is an amenable number.

32643433641 is a deficient number, since it is larger than the sum of its proper divisors (21679799127).

32643433641 is a wasteful number, since it uses less digits than its factorization.

32643433641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1684221.

The product of its digits is 373248, while the sum is 39.

The spelling of 32643433641 in words is "thirty-two billion, six hundred forty-three million, four hundred thirty-three thousand, six hundred forty-one".