250538243693 has 4 divisors (see below), whose sum is σ = 250917273468. Its totient is φ = 250159213920.

The previous prime is 250538243677. The next prime is 250538243719. The reversal of 250538243693 is 396342835052.

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 79748630404 + 170789613289 = 282398^2 + 413267^2 .

It is a cyclic number.

It is not a de Polignac number, because 250538243693 - 2⁴ = 250538243677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (250538243633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 189513896 + ... + 189515217.

It is an arithmetic number, because the mean of its divisors is an integer number (62729318367).

Almost surely, 2^250538243693 is an apocalyptic number.

It is an amenable number.

250538243693 is a deficient number, since it is larger than the sum of its proper divisors (379029775).

250538243693 is an equidigital number, since it uses as much as digits as its factorization.

250538243693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379029774.

The product of its (nonzero) digits is 4665600, while the sum is 50.

The spelling of 250538243693 in words is "two hundred fifty billion, five hundred thirty-eight million, two hundred forty-three thousand, six hundred ninety-three".