4256144677687 has 12 divisors (see below), whose sum is σ = 4963952422656. Its totient is φ = 3638598865440.

The previous prime is 4256144677667. The next prime is 4256144677781. The reversal of 4256144677687 is 7867764416524.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-4256144677687 is a prime.

It is a super-2 number, since 2×4256144677687² (a number of 26 digits) 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 (4256144677637) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 113375614 + ... + 113413147.

It is an arithmetic number, because the mean of its divisors is an integer number (413662701888).

Almost surely, 2^{4256144677687} is an apocalyptic number.

4256144677687 is a deficient number, since it is larger than the sum of its proper divisors (707807744969).

4256144677687 is a wasteful number, since it uses less digits than its factorization.

4256144677687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226789158 (or 226789151 counting only the distinct ones).

The product of its digits is 379330560, while the sum is 67.

The spelling of 4256144677687 in words is "four trillion, two hundred fifty-six billion, one hundred forty-four million, six hundred seventy-seven thousand, six hundred eighty-seven".