4256664271 has 4 divisors (see below), whose sum is σ = 4270092552. Its totient is φ = 4243235992.

The previous prime is 4256664253. The next prime is 4256664277. The reversal of 4256664271 is 1724666524.

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-4256664271 is a prime.

It is a super-2 number, since 2×4256664271² = 36238381432015922882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4256664277) 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, 6713665 + ... + 6714298.

It is an arithmetic number, because the mean of its divisors is an integer number (1067523138).

Almost surely, 2^4256664271 is an apocalyptic number.

4256664271 is a deficient number, since it is larger than the sum of its proper divisors (13428281).

4256664271 is a wasteful number, since it uses less digits than its factorization.

4256664271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13428280.

The product of its digits is 483840, while the sum is 43.

The square root of 4256664271 is about 65243.1166560887. The cubic root of 4256664271 is about 1620.6521114681.

The spelling of 4256664271 in words is "four billion, two hundred fifty-six million, six hundred sixty-four thousand, two hundred seventy-one".