32118090691 has 4 divisors (see below), whose sum is σ = 32131414584. Its totient is φ = 32104766800.

The previous prime is 32118090679. The next prime is 32118090707. The reversal of 32118090691 is 19609081123.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19609081123 = 137 ⋅143131979.

It is a cyclic number.

It is not a de Polignac number, because 32118090691 - 2¹⁷ = 32117959619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (32118090791) 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, 6658330 + ... + 6663151.

It is an arithmetic number, because the mean of its divisors is an integer number (8032853646).

Almost surely, 2^32118090691 is an apocalyptic number.

32118090691 is a deficient number, since it is larger than the sum of its proper divisors (13323893).

32118090691 is a wasteful number, since it uses less digits than its factorization.

32118090691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13323892.

The product of its (nonzero) digits is 23328, while the sum is 40.

The spelling of 32118090691 in words is "thirty-two billion, one hundred eighteen million, ninety thousand, six hundred ninety-one".