266203231085 has 16 divisors (see below), whose sum is σ = 348494657472. Its totient is φ = 193596556800.

The previous prime is 266203231027. The next prime is 266203231097. The reversal of 266203231085 is 580132302662.

It is a happy number.

It is not a de Polignac number, because 266203231085 - 2⁸ = 266203230829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2831402 + ... + 2923908.

It is an arithmetic number, because the mean of its divisors is an integer number (21780916092).

Almost surely, 2^266203231085 is an apocalyptic number.

It is an amenable number.

266203231085 is a deficient number, since it is larger than the sum of its proper divisors (82291426387).

266203231085 is a wasteful number, since it uses less digits than its factorization.

266203231085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144844.

The product of its (nonzero) digits is 103680, while the sum is 38.

The spelling of 266203231085 in words is "two hundred sixty-six billion, two hundred three million, two hundred thirty-one thousand, eighty-five".