11615611601 has 8 divisors (see below), whose sum is σ = 13338501600. Its totient is φ = 10003875840.

The previous prime is 11615611597. The next prime is 11615611627. The reversal of 11615611601 is 10611651611.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 11615611601 - 2² = 11615611597 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11615611001) 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, 27788336 + ... + 27788753.

It is an arithmetic number, because the mean of its divisors is an integer number (1667312700).

Almost surely, 2^11615611601 is an apocalyptic number.

11615611601 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11615611601 is a deficient number, since it is larger than the sum of its proper divisors (1722889999).

11615611601 is a wasteful number, since it uses less digits than its factorization.

11615611601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55577119.

The product of its (nonzero) digits is 1080, while the sum is 29.

The spelling of 11615611601 in words is "eleven billion, six hundred fifteen million, six hundred eleven thousand, six hundred one".