16291046427 has 4 divisors (see below), whose sum is σ = 21721395240. Its totient is φ = 10860697616.

The previous prime is 16291046417. The next prime is 16291046531. The reversal of 16291046427 is 72464019261.

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

It is a cyclic number.

It is not a de Polignac number, because 16291046427 - 2¹² = 16291042331 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16291046407) 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, 2715174402 + ... + 2715174407.

It is an arithmetic number, because the mean of its divisors is an integer number (5430348810).

Almost surely, 2^16291046427 is an apocalyptic number.

16291046427 is a deficient number, since it is larger than the sum of its proper divisors (5430348813).

16291046427 is an equidigital number, since it uses as much as digits as its factorization.

16291046427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5430348812.

The product of its (nonzero) digits is 145152, while the sum is 42.

The spelling of 16291046427 in words is "sixteen billion, two hundred ninety-one million, forty-six thousand, four hundred twenty-seven".