32643864939 has 16 divisors (see below), whose sum is σ = 49752299520. Its totient is φ = 18650161920.

The previous prime is 32643864937. The next prime is 32643864959. The reversal of 32643864939 is 93946834623.

It is not a de Polignac number, because 32643864939 - 2¹ = 32643864937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (32643864937) 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, 27174 + ... + 256955.

It is an arithmetic number, because the mean of its divisors is an integer number (3109518720).

Almost surely, 2^32643864939 is an apocalyptic number.

32643864939 is a deficient number, since it is larger than the sum of its proper divisors (17108434581).

32643864939 is a wasteful number, since it uses less digits than its factorization.

32643864939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289610.

The product of its digits is 20155392, while the sum is 57.

The spelling of 32643864939 in words is "thirty-two billion, six hundred forty-three million, eight hundred sixty-four thousand, nine hundred thirty-nine".