16118016691 has 8 divisors (see below), whose sum is σ = 19055783520. Its totient is φ = 13339048128.

The previous prime is 16118016611. The next prime is 16118016743. The reversal of 16118016691 is 19661081161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16118016691 - 2²³ = 16109628083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16118016601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39699346 + ... + 39699751.

It is an arithmetic number, because the mean of its divisors is an integer number (2381972940).

Almost surely, 2^16118016691 is an apocalyptic number.

16118016691 is a deficient number, since it is larger than the sum of its proper divisors (2937766829).

16118016691 is an equidigital number, since it uses as much as digits as its factorization.

16118016691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79399133.

The product of its (nonzero) digits is 15552, while the sum is 40.

The spelling of 16118016691 in words is "sixteen billion, one hundred eighteen million, sixteen thousand, six hundred ninety-one".