11612415520505 has 4 divisors (see below), whose sum is σ = 13934898624612. Its totient is φ = 9289932416400.

The previous prime is 11612415520501. The next prime is 11612415520523. The reversal of 11612415520505 is 50502551421611.

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 3650289188329 + 7962126332176 = 1910573^2 + 2821724^2 .

It is not a de Polignac number, because 11612415520505 - 2² = 11612415520501 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11612415520501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1161241552046 + ... + 1161241552055.

It is an arithmetic number, because the mean of its divisors is an integer number (3483724656153).

Almost surely, 2^{11612415520505} is an apocalyptic number.

It is an amenable number.

11612415520505 is a deficient number, since it is larger than the sum of its proper divisors (2322483104107).

11612415520505 is an equidigital number, since it uses as much as digits as its factorization.

11612415520505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2322483104106.

The product of its (nonzero) digits is 60000, while the sum is 38.

The spelling of 11612415520505 in words is "eleven trillion, six hundred twelve billion, four hundred fifteen million, five hundred twenty thousand, five hundred five".