266413901655 has 16 divisors (see below), whose sum is σ = 465013355904. Its totient is φ = 129170376480.

The previous prime is 266413901647. The next prime is 266413901657. The reversal of 266413901655 is 556109314662.

266413901655 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 266413901655 - 2³ = 266413901647 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266413901657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 807314689 + ... + 807315018.

It is an arithmetic number, because the mean of its divisors is an integer number (29063334744).

Almost surely, 2^266413901655 is an apocalyptic number.

266413901655 is a deficient number, since it is larger than the sum of its proper divisors (198599454249).

266413901655 is a wasteful number, since it uses less digits than its factorization.

266413901655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1614629726.

The product of its (nonzero) digits is 1166400, while the sum is 48.

The spelling of 266413901655 in words is "two hundred sixty-six billion, four hundred thirteen million, nine hundred one thousand, six hundred fifty-five".