32009164991 has 4 divisors (see below), whose sum is σ = 32009533584. Its totient is φ = 32008796400.

The previous prime is 32009164973. The next prime is 32009164997. The reversal of 32009164991 is 19946190023.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 32009164991 - 2²² = 32004970687 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32009164997) 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, 25811 + ... + 254331.

It is an arithmetic number, because the mean of its divisors is an integer number (8002383396).

Almost surely, 2^32009164991 is an apocalyptic number.

32009164991 is a deficient number, since it is larger than the sum of its proper divisors (368593).

32009164991 is a wasteful number, since it uses less digits than its factorization.

32009164991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368592.

The product of its (nonzero) digits is 104976, while the sum is 44.

The spelling of 32009164991 in words is "thirty-two billion, nine million, one hundred sixty-four thousand, nine hundred ninety-one".