266145551231 has 8 divisors (see below), whose sum is σ = 304981806624. Its totient is φ = 227513161440.

The previous prime is 266145551227. The next prime is 266145551263. The reversal of 266145551231 is 132155541662.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 266145551231 - 2² = 266145551227 is a prime.

It is a super-2 number, since 2×266145551231² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266145551201) 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, 50963600 + ... + 50968821.

It is an arithmetic number, because the mean of its divisors is an integer number (38122725828).

Almost surely, 2^266145551231 is an apocalyptic number.

266145551231 is a deficient number, since it is larger than the sum of its proper divisors (38836255393).

266145551231 is a wasteful number, since it uses less digits than its factorization.

266145551231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101932801.

The product of its digits is 216000, while the sum is 41.

The spelling of 266145551231 in words is "two hundred sixty-six billion, one hundred forty-five million, five hundred fifty-one thousand, two hundred thirty-one".