16245657427 has 4 divisors (see below), whose sum is σ = 16641893016. Its totient is φ = 15849421840.

The previous prime is 16245657403. The next prime is 16245657511. The reversal of 16245657427 is 72475654261.

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-16245657427 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16245651427) 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, 198117733 + ... + 198117814.

It is an arithmetic number, because the mean of its divisors is an integer number (4160473254).

Almost surely, 2^16245657427 is an apocalyptic number.

16245657427 is a deficient number, since it is larger than the sum of its proper divisors (396235589).

16245657427 is an equidigital number, since it uses as much as digits as its factorization.

16245657427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396235588.

The product of its digits is 2822400, while the sum is 49.

The spelling of 16245657427 in words is "sixteen billion, two hundred forty-five million, six hundred fifty-seven thousand, four hundred twenty-seven".