11350781771 has 4 divisors (see below), whose sum is σ = 12972322032. Its totient is φ = 9729241512.

The previous prime is 11350781749. The next prime is 11350781779. The reversal of 11350781771 is 17718705311.

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

It is a cyclic number.

It is not a de Polignac number, because 11350781771 - 2²² = 11346587467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11350781779) 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, 810770120 + ... + 810770133.

It is an arithmetic number, because the mean of its divisors is an integer number (3243080508).

Almost surely, 2^11350781771 is an apocalyptic number.

11350781771 is a deficient number, since it is larger than the sum of its proper divisors (1621540261).

11350781771 is an equidigital number, since it uses as much as digits as its factorization.

11350781771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1621540260.

The product of its (nonzero) digits is 41160, while the sum is 41.

The spelling of 11350781771 in words is "eleven billion, three hundred fifty million, seven hundred eighty-one thousand, seven hundred seventy-one".