12161704651 has 4 divisors (see below), whose sum is σ = 12175963072. Its totient is φ = 12147446232.

The previous prime is 12161704609. The next prime is 12161704657. The reversal of 12161704651 is 15640716121.

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 12161704651 - 2¹¹ = 12161702603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12161704657) 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, 7127931 + ... + 7129636.

It is an arithmetic number, because the mean of its divisors is an integer number (3043990768).

Almost surely, 2^12161704651 is an apocalyptic number.

12161704651 is a deficient number, since it is larger than the sum of its proper divisors (14258421).

12161704651 is an equidigital number, since it uses as much as digits as its factorization.

12161704651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14258420.

The product of its (nonzero) digits is 10080, while the sum is 34.

The spelling of 12161704651 in words is "twelve billion, one hundred sixty-one million, seven hundred four thousand, six hundred fifty-one".