242776357730155 has 4 divisors (see below), whose sum is σ = 291331629276192. Its totient is φ = 194221086184120.

The previous prime is 242776357730147. The next prime is 242776357730213. The reversal of 242776357730155 is 551037753677242.

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

It is not a de Polignac number, because 242776357730155 - 2³ = 242776357730147 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24277635773011 + ... + 24277635773020.

It is an arithmetic number, because the mean of its divisors is an integer number (72832907319048).

Almost surely, 2^{242776357730155} is an apocalyptic number.

242776357730155 is a deficient number, since it is larger than the sum of its proper divisors (48555271546037).

242776357730155 is an equidigital number, since it uses as much as digits as its factorization.

242776357730155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48555271546036.

The product of its (nonzero) digits is 259308000, while the sum is 64.

The spelling of 242776357730155 in words is "two hundred forty-two trillion, seven hundred seventy-six billion, three hundred fifty-seven million, seven hundred thirty thousand, one hundred fifty-five".