16109994427 has 16 divisors (see below), whose sum is σ = 17674109280. Its totient is φ = 14624077312.

The previous prime is 16109994403. The next prime is 16109994463. The reversal of 16109994427 is 72449990161.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16109994427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16109994487) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98368 + ... + 204685.

It is an arithmetic number, because the mean of its divisors is an integer number (1104631830).

Almost surely, 2^16109994427 is an apocalyptic number.

16109994427 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

16109994427 is a deficient number, since it is larger than the sum of its proper divisors (1564114853).

16109994427 is a wasteful number, since it uses less digits than its factorization.

16109994427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303182.

The product of its (nonzero) digits is 979776, while the sum is 52.

The spelling of 16109994427 in words is "sixteen billion, one hundred nine million, nine hundred ninety-four thousand, four hundred twenty-seven".