266523160226242 has 4 divisors (see below), whose sum is σ = 399784740339366. Its totient is φ = 133261580113120.

The previous prime is 266523160226233. The next prime is 266523160226243. The reversal of 266523160226242 is 242622061325662.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 172824651545841 + 93698508680401 = 13146279^2 + 9679799^2 .

It is not an unprimeable number, because it can be changed into a prime (266523160226243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66630790056559 + ... + 66630790056562.

Almost surely, 2^{266523160226242} is an apocalyptic number.

266523160226242 is a deficient number, since it is larger than the sum of its proper divisors (133261580113124).

266523160226242 is a wasteful number, since it uses less digits than its factorization.

266523160226242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133261580113123.

The product of its (nonzero) digits is 4976640, while the sum is 49.

The spelling of 266523160226242 in words is "two hundred sixty-six trillion, five hundred twenty-three billion, one hundred sixty million, two hundred twenty-six thousand, two hundred forty-two".