266122077251 has 4 divisors (see below), whose sum is σ = 267062438232. Its totient is φ = 265181716272.

The previous prime is 266122077197. The next prime is 266122077253. The reversal of 266122077251 is 152770221662.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-266122077251 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 266122077199 and 266122077208.

It is not an unprimeable number, because it can be changed into a prime (266122077253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 470180066 + ... + 470180631.

It is an arithmetic number, because the mean of its divisors is an integer number (66765609558).

Almost surely, 2^266122077251 is an apocalyptic number.

266122077251 is a deficient number, since it is larger than the sum of its proper divisors (940360981).

266122077251 is an equidigital number, since it uses as much as digits as its factorization.

266122077251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 940360980.

The product of its (nonzero) digits is 141120, while the sum is 41.

The spelling of 266122077251 in words is "two hundred sixty-six billion, one hundred twenty-two million, seventy-seven thousand, two hundred fifty-one".