266043540525242 has 8 divisors (see below), whose sum is σ = 399065689215732. Its totient is φ = 133021644120000.

The previous prime is 266043540525241. The next prime is 266043540525247. The reversal of 266043540525242 is 242525045340662.

It can be written as a sum of positive squares in 2 ways, for example, as 262913609881321 + 3129930643921 = 16214611^2 + 1769161^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (266043540525241) 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, 60412559 + ... + 64666562.

Almost surely, 2^{266043540525242} is an apocalyptic number.

266043540525242 is a deficient number, since it is larger than the sum of its proper divisors (133022148690490).

266043540525242 is a wasteful number, since it uses less digits than its factorization.

266043540525242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126142624.

The product of its (nonzero) digits is 13824000, while the sum is 50.

The spelling of 266043540525242 in words is "two hundred sixty-six trillion, forty-three billion, five hundred forty million, five hundred twenty-five thousand, two hundred forty-two".