4257865238408 has 16 divisors (see below), whose sum is σ = 7983604668060. Its totient is φ = 2128903993600.

The previous prime is 4257865238387. The next prime is 4257865238447. The reversal of 4257865238408 is 8048325687524.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 4177028513284 + 80836725124 = 2043778^2 + 284318^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2939333 + ... + 4141908.

Almost surely, 2^{4257865238408} is an apocalyptic number.

It is an amenable number.

4257865238408 is a deficient number, since it is larger than the sum of its proper divisors (3725739429652).

4257865238408 is a wasteful number, since it uses less digits than its factorization.

4257865238408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7156408 (or 7156404 counting only the distinct ones).

The product of its (nonzero) digits is 103219200, while the sum is 62.

The spelling of 4257865238408 in words is "four trillion, two hundred fifty-seven billion, eight hundred sixty-five million, two hundred thirty-eight thousand, four hundred eight".