11623647766 has 4 divisors (see below), whose sum is σ = 17435471652. Its totient is φ = 5811823882.

The previous prime is 11623647757. The next prime is 11623647781. The reversal of 11623647766 is 66774632611.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 66774632611 = 3623 ⋅18430757.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2905911940 + ... + 2905911943.

It is an arithmetic number, because the mean of its divisors is an integer number (4358867913).

Almost surely, 2^11623647766 is an apocalyptic number.

11623647766 is a deficient number, since it is larger than the sum of its proper divisors (5811823886).

11623647766 is an equidigital number, since it uses as much as digits as its factorization.

11623647766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5811823885.

The product of its digits is 1524096, while the sum is 49.

The spelling of 11623647766 in words is "eleven billion, six hundred twenty-three million, six hundred forty-seven thousand, seven hundred sixty-six".