32645551971 has 4 divisors (see below), whose sum is σ = 43527402632. Its totient is φ = 21763701312.

The previous prime is 32645551943. The next prime is 32645551973. The reversal of 32645551971 is 17915554623.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 32645551971 - 2¹⁹ = 32645027683 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 32645551971.

It is not an unprimeable number, because it can be changed into a prime (32645551973) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5440925326 + ... + 5440925331.

It is an arithmetic number, because the mean of its divisors is an integer number (10881850658).

Almost surely, 2^32645551971 is an apocalyptic number.

32645551971 is a deficient number, since it is larger than the sum of its proper divisors (10881850661).

32645551971 is a wasteful number, since it uses less digits than its factorization.

32645551971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10881850660.

The product of its digits is 1134000, while the sum is 48.

The spelling of 32645551971 in words is "thirty-two billion, six hundred forty-five million, five hundred fifty-one thousand, nine hundred seventy-one".