11615606617 has 8 divisors (see below), whose sum is σ = 11886461640. Its totient is φ = 11346666240.

The previous prime is 11615606551. The next prime is 11615606683. The reversal of 11615606617 is 71660651611.

It is an interprime number because it is at equal distance from previous prime (11615606551) and next prime (11615606683).

It can be written as a sum of positive squares in 4 ways, for example, as 6891656256 + 4723950361 = 83016^2 + 68731^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11615606617 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11615606617.

It is not an unprimeable number, because it can be changed into a prime (11615606687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 466384 + ... + 490657.

It is an arithmetic number, because the mean of its divisors is an integer number (1485807705).

Almost surely, 2^11615606617 is an apocalyptic number.

It is an amenable number.

11615606617 is a deficient number, since it is larger than the sum of its proper divisors (270855023).

11615606617 is an equidigital number, since it uses as much as digits as its factorization.

11615606617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 957323.

The product of its (nonzero) digits is 45360, while the sum is 40.

The spelling of 11615606617 in words is "eleven billion, six hundred fifteen million, six hundred six thousand, six hundred seventeen".