32172707021 has 16 divisors (see below), whose sum is σ = 40268323200. Its totient is φ = 25023878208.

The previous prime is 32172706999. The next prime is 32172707033. The reversal of 32172707021 is 12070727123.

It is not a de Polignac number, because 32172707021 - 2⁶ = 32172706957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32172707071) 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, 2990786 + ... + 3001523.

It is an arithmetic number, because the mean of its divisors is an integer number (2516770200).

Almost surely, 2^32172707021 is an apocalyptic number.

It is an amenable number.

32172707021 is a deficient number, since it is larger than the sum of its proper divisors (8095616179).

32172707021 is a wasteful number, since it uses less digits than its factorization.

32172707021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5992388.

The product of its (nonzero) digits is 8232, while the sum is 32.

The spelling of 32172707021 in words is "thirty-two billion, one hundred seventy-two million, seven hundred seven thousand, twenty-one".