6437845253 has 24 divisors (see below), whose sum is σ = 7606420632. Its totient is φ = 5431878144.

The previous prime is 6437845247. The next prime is 6437845261. The reversal of 6437845253 is 3525487346.

It can be written as a sum of positive squares in 4 ways, for example, as 1445292289 + 4992552964 = 38017^2 + 70658^2 .

It is not a de Polignac number, because 6437845253 - 2¹⁰ = 6437844229 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6437845198 and 6437845207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6437845273) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2205551 + ... + 2208467.

It is an arithmetic number, because the mean of its divisors is an integer number (316934193).

Almost surely, 2^6437845253 is an apocalyptic number.

It is an amenable number.

6437845253 is a deficient number, since it is larger than the sum of its proper divisors (1168575379).

6437845253 is a wasteful number, since it uses less digits than its factorization.

6437845253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3621 (or 3614 counting only the distinct ones).

The product of its digits is 2419200, while the sum is 47.

The square root of 6437845253 is about 80236.1841876843. The cubic root of 6437845253 is about 1860.2879706944.

The spelling of 6437845253 in words is "six billion, four hundred thirty-seven million, eight hundred forty-five thousand, two hundred fifty-three".