266605613250 has 64 divisors (see below), whose sum is σ = 665792345088. Its totient is φ = 71058000000.

The previous prime is 266605613233. The next prime is 266605613273. The reversal of 266605613250 is 52316506662.

266605613250 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon 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 31 ways as a sum of consecutive naturals, for example, 1372150 + ... + 1554350.

It is an arithmetic number, because the mean of its divisors is an integer number (10403005392).

Almost surely, 2^266605613250 is an apocalyptic number.

266605613250 is an abundant number, since it is smaller than the sum of its proper divisors (399186731838).

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

266605613250 is a wasteful number, since it uses less digits than its factorization.

266605613250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184172 (or 184162 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 42.

The spelling of 266605613250 in words is "two hundred sixty-six billion, six hundred five million, six hundred thirteen thousand, two hundred fifty".