266639910456 has 32 divisors (see below), whose sum is σ = 666613411200. Its totient is φ = 88878152160.

The previous prime is 266639910437. The next prime is 266639910533. The reversal of 266639910456 is 654019936662.

266639910456 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 266639910396 and 266639910405.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1630555 + ... + 1786613.

It is an arithmetic number, because the mean of its divisors is an integer number (20831669100).

Almost surely, 2^266639910456 is an apocalyptic number.

It is an amenable number.

266639910456 is an abundant number, since it is smaller than the sum of its proper divisors (399973500744).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

266639910456 is a wasteful number, since it uses less digits than its factorization.

266639910456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227259 (or 227255 counting only the distinct ones).

The product of its (nonzero) digits is 12597120, while the sum is 57.

The spelling of 266639910456 in words is "two hundred sixty-six billion, six hundred thirty-nine million, nine hundred ten thousand, four hundred fifty-six".