11624664643505 has 4 divisors (see below), whose sum is σ = 13949597572212. Its totient is φ = 9299731714800.

The previous prime is 11624664643451. The next prime is 11624664643531. The reversal of 11624664643505 is 50534646642611.

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

It can be written as a sum of positive squares in 2 ways, for example, as 8218307164081 + 3406357479424 = 2866759^2 + 1845632^2 .

It is not a de Polignac number, because 11624664643505 - 2¹² = 11624664639409 is a prime.

It is a Duffinian 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 in 3 ways as a sum of consecutive naturals, for example, 1162466464346 + ... + 1162466464355.

It is an arithmetic number, because the mean of its divisors is an integer number (3487399393053).

Almost surely, 2^{11624664643505} is an apocalyptic number.

It is an amenable number.

11624664643505 is a deficient number, since it is larger than the sum of its proper divisors (2324932928707).

11624664643505 is an equidigital number, since it uses as much as digits as its factorization.

11624664643505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2324932928706.

The product of its (nonzero) digits is 12441600, while the sum is 53.

The spelling of 11624664643505 in words is "eleven trillion, six hundred twenty-four billion, six hundred sixty-four million, six hundred forty-three thousand, five hundred five".