11161662971 has 4 divisors (see below), whose sum is σ = 11189497944. Its totient is φ = 11133828000.

The previous prime is 11161662923. The next prime is 11161662973. The reversal of 11161662971 is 17926616111.

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 11161662971 - 2¹⁰ = 11161661947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11161662973) 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, 13916885 + ... + 13917686.

It is an arithmetic number, because the mean of its divisors is an integer number (2797374486).

Almost surely, 2^11161662971 is an apocalyptic number.

11161662971 is a deficient number, since it is larger than the sum of its proper divisors (27834973).

11161662971 is an equidigital number, since it uses as much as digits as its factorization.

11161662971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27834972.

The product of its digits is 27216, while the sum is 41.

The spelling of 11161662971 in words is "eleven billion, one hundred sixty-one million, six hundred sixty-two thousand, nine hundred seventy-one".