11261775311 has 4 divisors (see below), whose sum is σ = 11262021624. Its totient is φ = 11261529000.

The previous prime is 11261775277. The next prime is 11261775313. The reversal of 11261775311 is 11357716211.

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-11261775311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11261775313) 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, 32165 + ... + 153486.

It is an arithmetic number, because the mean of its divisors is an integer number (2815505406).

Almost surely, 2^11261775311 is an apocalyptic number.

11261775311 is a deficient number, since it is larger than the sum of its proper divisors (246313).

11261775311 is an equidigital number, since it uses as much as digits as its factorization.

11261775311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246312.

The product of its digits is 8820, while the sum is 35.

The spelling of 11261775311 in words is "eleven billion, two hundred sixty-one million, seven hundred seventy-five thousand, three hundred eleven".