11993652005 has 4 divisors (see below), whose sum is σ = 14392382412. Its totient is φ = 9594921600.

The previous prime is 11993651953. The next prime is 11993652049. The reversal of 11993652005 is 50025639911.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50025639911 = 13 ⋅3848126147.

It can be written as a sum of positive squares in 2 ways, for example, as 9511320676 + 2482331329 = 97526^2 + 49823^2 .

It is not a de Polignac number, because 11993652005 - 2⁸ = 11993651749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1199365196 + ... + 1199365205.

It is an arithmetic number, because the mean of its divisors is an integer number (3598095603).

Almost surely, 2^11993652005 is an apocalyptic number.

It is an amenable number.

11993652005 is a deficient number, since it is larger than the sum of its proper divisors (2398730407).

11993652005 is an equidigital number, since it uses as much as digits as its factorization.

11993652005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2398730406.

The product of its (nonzero) digits is 72900, while the sum is 41.

The spelling of 11993652005 in words is "eleven billion, nine hundred ninety-three million, six hundred fifty-two thousand, five".