243455351155 has 4 divisors (see below), whose sum is σ = 292146421392. Its totient is φ = 194764280920.

The previous prime is 243455351137. The next prime is 243455351171. The reversal of 243455351155 is 551153554342.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 551153554342 = 2 ⋅275576777171.

It is a de Polignac number, because none of the positive numbers 2^k-243455351155 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, 24345535111 + ... + 24345535120.

It is an arithmetic number, because the mean of its divisors is an integer number (73036605348).

Almost surely, 2^243455351155 is an apocalyptic number.

243455351155 is a deficient number, since it is larger than the sum of its proper divisors (48691070237).

243455351155 is an equidigital number, since it uses as much as digits as its factorization.

243455351155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48691070236.

The product of its digits is 900000, while the sum is 43.

The spelling of 243455351155 in words is "two hundred forty-three billion, four hundred fifty-five million, three hundred fifty-one thousand, one hundred fifty-five".