8257043345 has 8 divisors (see below), whose sum is σ = 9929672064. Its totient is φ = 6591487984.

The previous prime is 8257043339. The next prime is 8257043369. The reversal of 8257043345 is 5433407528.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8257043345 - 2⁶ = 8257043281 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1765769 + ... + 1770438.

It is an arithmetic number, because the mean of its divisors is an integer number (1241209008).

Almost surely, 2^8257043345 is an apocalyptic number.

It is an amenable number.

8257043345 is a deficient number, since it is larger than the sum of its proper divisors (1672628719).

8257043345 is a wasteful number, since it uses less digits than its factorization.

8257043345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3536679.

The product of its (nonzero) digits is 403200, while the sum is 41.

The square root of 8257043345 is about 90868.2746892445. The cubic root of 8257043345 is about 2021.1948739738.

The spelling of 8257043345 in words is "eight billion, two hundred fifty-seven million, forty-three thousand, three hundred forty-five".