266221143275 has 12 divisors (see below), whose sum is σ = 330792085392. Its totient is φ = 212539580640.

The previous prime is 266221143241. The next prime is 266221143281. The reversal of 266221143275 is 572341122662.

It is not a de Polignac number, because 266221143275 - 2¹⁸ = 266220881131 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10920932 + ... + 10945281.

It is an arithmetic number, because the mean of its divisors is an integer number (27566007116).

Almost surely, 2^266221143275 is an apocalyptic number.

266221143275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

266221143275 is a deficient number, since it is larger than the sum of its proper divisors (64570942117).

266221143275 is a wasteful number, since it uses less digits than its factorization.

266221143275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21866710 (or 21866705 counting only the distinct ones).

The product of its digits is 241920, while the sum is 41.

The spelling of 266221143275 in words is "two hundred sixty-six billion, two hundred twenty-one million, one hundred forty-three thousand, two hundred seventy-five".