32443541521 has 4 divisors (see below), whose sum is σ = 32927773552. Its totient is φ = 31959309492.

The previous prime is 32443541491. The next prime is 32443541587. The reversal of 32443541521 is 12514534423.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12514534423 = 53 ⋅236123291.

It is a cyclic number.

It is not a de Polignac number, because 32443541521 - 2⁷ = 32443541393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (32443541021) 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, 242115915 + ... + 242116048.

It is an arithmetic number, because the mean of its divisors is an integer number (8231943388).

Almost surely, 2^32443541521 is an apocalyptic number.

It is an amenable number.

32443541521 is a deficient number, since it is larger than the sum of its proper divisors (484232031).

32443541521 is an equidigital number, since it uses as much as digits as its factorization.

32443541521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484232030.

The product of its digits is 57600, while the sum is 34.

The spelling of 32443541521 in words is "thirty-two billion, four hundred forty-three million, five hundred forty-one thousand, five hundred twenty-one".