266145220264 has 64 divisors (see below), whose sum is σ = 658755192960. Its totient is φ = 97593354240.

The previous prime is 266145220207. The next prime is 266145220303. The reversal of 266145220264 is 462022541662.

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, 12696997 + ... + 12717940.

It is an arithmetic number, because the mean of its divisors is an integer number (10293049890).

Almost surely, 2^266145220264 is an apocalyptic number.

It is an amenable number.

266145220264 is an abundant number, since it is smaller than the sum of its proper divisors (392609972696).

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

266145220264 is a wasteful number, since it uses less digits than its factorization.

266145220264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25414978 (or 25414974 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 40.

The spelling of 266145220264 in words is "two hundred sixty-six billion, one hundred forty-five million, two hundred twenty thousand, two hundred sixty-four".