43253247385 has 4 divisors (see below), whose sum is σ = 51903896868. Its totient is φ = 34602597904.

The previous prime is 43253247313. The next prime is 43253247431. The reversal of 43253247385 is 58374235234.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 28914621849 + 14338625536 = 170043^2 + 119744^2 .

It is a cyclic number.

It is not a de Polignac number, because 43253247385 - 2²³ = 43244858777 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4325324734 + ... + 4325324743.

It is an arithmetic number, because the mean of its divisors is an integer number (12975974217).

Almost surely, 2^43253247385 is an apocalyptic number.

It is an amenable number.

43253247385 is a deficient number, since it is larger than the sum of its proper divisors (8650649483).

43253247385 is an equidigital number, since it uses as much as digits as its factorization.

43253247385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8650649482.

The product of its digits is 2419200, while the sum is 46.

The spelling of 43253247385 in words is "forty-three billion, two hundred fifty-three million, two hundred forty-seven thousand, three hundred eighty-five".