242776662506401 has 4 divisors (see below), whose sum is σ = 242789248800900. Its totient is φ = 242764076211904.

The previous prime is 242776662506383. The next prime is 242776662506459. The reversal of 242776662506401 is 104605266677242.

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 206966922459025 + 35809740047376 = 14386345^2 + 5984124^2 .

It is a cyclic number.

It is not a de Polignac number, because 242776662506401 - 2¹⁷ = 242776662375329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242776662500401) 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, 6293118316 + ... + 6293156893.

It is an arithmetic number, because the mean of its divisors is an integer number (60697312200225).

Almost surely, 2^{242776662506401} is an apocalyptic number.

It is an amenable number.

242776662506401 is a deficient number, since it is larger than the sum of its proper divisors (12586294499).

242776662506401 is a wasteful number, since it uses less digits than its factorization.

242776662506401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12586294498.

The product of its (nonzero) digits is 40642560, while the sum is 58.

The spelling of 242776662506401 in words is "two hundred forty-two trillion, seven hundred seventy-six billion, six hundred sixty-two million, five hundred six thousand, four hundred one".