266195450172 has 24 divisors (see below), whose sum is σ = 621151400016. Its totient is φ = 88727719168.

The previous prime is 266195450153. The next prime is 266195450173. The reversal of 266195450172 is 271054591662.

266195450172 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266195450173) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 235533 + ... + 766724.

It is an arithmetic number, because the mean of its divisors is an integer number (25881308334).

Almost surely, 2^266195450172 is an apocalyptic number.

It is an amenable number.

266195450172 is an abundant number, since it is smaller than the sum of its proper divisors (354955949844).

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

266195450172 is a wasteful number, since it uses less digits than its factorization.

266195450172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1024397 (or 1024395 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 48.

The spelling of 266195450172 in words is "two hundred sixty-six billion, one hundred ninety-five million, four hundred fifty thousand, one hundred seventy-two".