16257157271 has 4 divisors (see below), whose sum is σ = 16653673344. Its totient is φ = 15860641200.

The previous prime is 16257157201. The next prime is 16257157289. The reversal of 16257157271 is 17275175261.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17275175261 = 179 ⋅96509359.

It is a cyclic number.

It is not a de Polignac number, because 16257157271 - 2²² = 16252962967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16257157201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 198257975 + ... + 198258056.

It is an arithmetic number, because the mean of its divisors is an integer number (4163418336).

Almost surely, 2^16257157271 is an apocalyptic number.

16257157271 is a deficient number, since it is larger than the sum of its proper divisors (396516073).

16257157271 is an equidigital number, since it uses as much as digits as its factorization.

16257157271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396516072.

The product of its digits is 205800, while the sum is 44.

The spelling of 16257157271 in words is "sixteen billion, two hundred fifty-seven million, one hundred fifty-seven thousand, two hundred seventy-one".