32067532721 has 4 divisors (see below), whose sum is σ = 36648608832. Its totient is φ = 27486456612.

The previous prime is 32067532699. The next prime is 32067532723. The reversal of 32067532721 is 12723576023.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 32067532721 - 2¹⁰ = 32067531697 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (32067532723) 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, 2290538045 + ... + 2290538058.

It is an arithmetic number, because the mean of its divisors is an integer number (9162152208).

Almost surely, 2^32067532721 is an apocalyptic number.

It is an amenable number.

32067532721 is a deficient number, since it is larger than the sum of its proper divisors (4581076111).

32067532721 is an equidigital number, since it uses as much as digits as its factorization.

32067532721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4581076110.

The product of its (nonzero) digits is 105840, while the sum is 38.

The spelling of 32067532721 in words is "thirty-two billion, sixty-seven million, five hundred thirty-two thousand, seven hundred twenty-one".