256249199343 has 16 divisors (see below), whose sum is σ = 345562731360. Its totient is φ = 168884880384.

The previous prime is 256249199341. The next prime is 256249199357. The reversal of 256249199343 is 343991942652.

It is not a de Polignac number, because 256249199343 - 2¹ = 256249199341 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256249199341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1570455 + ... + 1725927.

It is an arithmetic number, because the mean of its divisors is an integer number (21597670710).

Almost surely, 2^256249199343 is an apocalyptic number.

256249199343 is a deficient number, since it is larger than the sum of its proper divisors (89313532017).

256249199343 is a wasteful number, since it uses less digits than its factorization.

256249199343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161738.

The product of its digits is 12597120, while the sum is 57.

The spelling of 256249199343 in words is "two hundred fifty-six billion, two hundred forty-nine million, one hundred ninety-nine thousand, three hundred forty-three".