16601933291 has 4 divisors (see below), whose sum is σ = 16721371800. Its totient is φ = 16482494784.

The previous prime is 16601933273. The next prime is 16601933303. The reversal of 16601933291 is 19233910661.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16601933291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16601933251) 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, 59719046 + ... + 59719323.

It is an arithmetic number, because the mean of its divisors is an integer number (4180342950).

Almost surely, 2^16601933291 is an apocalyptic number.

16601933291 is a deficient number, since it is larger than the sum of its proper divisors (119438509).

16601933291 is a wasteful number, since it uses less digits than its factorization.

16601933291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119438508.

The product of its (nonzero) digits is 52488, while the sum is 41.

The spelling of 16601933291 in words is "sixteen billion, six hundred one million, nine hundred thirty-three thousand, two hundred ninety-one".