243155511353 has 4 divisors (see below), whose sum is σ = 245662269300. Its totient is φ = 240648753408.

The previous prime is 243155511337. The next prime is 243155511359. The reversal of 243155511353 is 353115551342.

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 155987082304 + 87168429049 = 394952^2 + 295243^2 .

It is a cyclic number.

It is not a de Polignac number, because 243155511353 - 2⁴ = 243155511337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243155511359) 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, 1253378828 + ... + 1253379021.

It is an arithmetic number, because the mean of its divisors is an integer number (61415567325).

Almost surely, 2^243155511353 is an apocalyptic number.

It is an amenable number.

243155511353 is a deficient number, since it is larger than the sum of its proper divisors (2506757947).

243155511353 is an equidigital number, since it uses as much as digits as its factorization.

243155511353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2506757946.

The product of its digits is 135000, while the sum is 38.

The spelling of 243155511353 in words is "two hundred forty-three billion, one hundred fifty-five million, five hundred eleven thousand, three hundred fifty-three".