32543117491 has 4 divisors (see below), whose sum is σ = 32859070192. Its totient is φ = 32227164792.

The previous prime is 32543117461. The next prime is 32543117507. The reversal of 32543117491 is 19471134523.

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

It is a cyclic number.

It is not a de Polignac number, because 32543117491 - 2⁷ = 32543117363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (32543117461) 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, 157976196 + ... + 157976401.

It is an arithmetic number, because the mean of its divisors is an integer number (8214767548).

Almost surely, 2^32543117491 is an apocalyptic number.

32543117491 is a deficient number, since it is larger than the sum of its proper divisors (315952701).

32543117491 is a wasteful number, since it uses less digits than its factorization.

32543117491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315952700.

The product of its digits is 90720, while the sum is 40.

The spelling of 32543117491 in words is "thirty-two billion, five hundred forty-three million, one hundred seventeen thousand, four hundred ninety-one".