253333553565243 has 4 divisors (see below), whose sum is σ = 337778071420328. Its totient is φ = 168889035710160.

The previous prime is 253333553565067. The next prime is 253333553565307. The reversal of 253333553565243 is 342565355333352.

It is a happy number.

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

It is not a de Polignac number, because 253333553565243 - 2⁹ = 253333553564731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253333553565943) 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, 42222258927538 + ... + 42222258927543.

It is an arithmetic number, because the mean of its divisors is an integer number (84444517855082).

Almost surely, 2^{253333553565243} is an apocalyptic number.

253333553565243 is a deficient number, since it is larger than the sum of its proper divisors (84444517855085).

253333553565243 is an equidigital number, since it uses as much as digits as its factorization.

253333553565243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84444517855084.

The product of its digits is 218700000, while the sum is 57.

The spelling of 253333553565243 in words is "two hundred fifty-three trillion, three hundred thirty-three billion, five hundred fifty-three million, five hundred sixty-five thousand, two hundred forty-three".