11661165422 has 4 divisors (see below), whose sum is σ = 17491748136. Its totient is φ = 5830582710.

The previous prime is 11661165377. The next prime is 11661165433. The reversal of 11661165422 is 22456116611.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2915291354 + ... + 2915291357.

It is an arithmetic number, because the mean of its divisors is an integer number (4372937034).

Almost surely, 2^11661165422 is an apocalyptic number.

11661165422 is a deficient number, since it is larger than the sum of its proper divisors (5830582714).

11661165422 is an equidigital number, since it uses as much as digits as its factorization.

11661165422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5830582713.

The product of its digits is 17280, while the sum is 35.

The spelling of 11661165422 in words is "eleven billion, six hundred sixty-one million, one hundred sixty-five thousand, four hundred twenty-two".