11615606615 has 4 divisors (see below), whose sum is σ = 13938727944. Its totient is φ = 9292485288.

The previous prime is 11615606551. The next prime is 11615606683. The reversal of 11615606615 is 51660651611.

11615606615 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51660651611 = 461 ⋅112062151.

It is a cyclic number.

It is not a de Polignac number, because 11615606615 - 2⁶ = 11615606551 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1161560657 + ... + 1161560666.

It is an arithmetic number, because the mean of its divisors is an integer number (3484681986).

Almost surely, 2^11615606615 is an apocalyptic number.

11615606615 is a deficient number, since it is larger than the sum of its proper divisors (2323121329).

11615606615 is an equidigital number, since it uses as much as digits as its factorization.

11615606615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2323121328.

The product of its (nonzero) digits is 32400, while the sum is 38.

The spelling of 11615606615 in words is "eleven billion, six hundred fifteen million, six hundred six thousand, six hundred fifteen".