11266205251 has 4 divisors (see below), whose sum is σ = 12875663152. Its totient is φ = 9656747352.

The previous prime is 11266205243. The next prime is 11266205263. The reversal of 11266205251 is 15250266211.

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

It is not a de Polignac number, because 11266205251 - 2³ = 11266205243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11266205231) 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, 804728940 + ... + 804728953.

It is an arithmetic number, because the mean of its divisors is an integer number (3218915788).

Almost surely, 2^11266205251 is an apocalyptic number.

11266205251 is a deficient number, since it is larger than the sum of its proper divisors (1609457901).

11266205251 is an equidigital number, since it uses as much as digits as its factorization.

11266205251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1609457900.

The product of its (nonzero) digits is 7200, while the sum is 31.

The spelling of 11266205251 in words is "eleven billion, two hundred sixty-six million, two hundred five thousand, two hundred fifty-one".