11656155655 has 8 divisors (see below), whose sum is σ = 14810174352. Its totient is φ = 8776399488.

The previous prime is 11656155653. The next prime is 11656155733. The reversal of 11656155655 is 55655165611.

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 11656155655 - 2¹ = 11656155653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11656155653) 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, 68565537 + ... + 68565706.

It is an arithmetic number, because the mean of its divisors is an integer number (1851271794).

Almost surely, 2^11656155655 is an apocalyptic number.

11656155655 is a deficient number, since it is larger than the sum of its proper divisors (3154018697).

11656155655 is a wasteful number, since it uses less digits than its factorization.

11656155655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137131265.

The product of its digits is 675000, while the sum is 46.

The spelling of 11656155655 in words is "eleven billion, six hundred fifty-six million, one hundred fifty-five thousand, six hundred fifty-five".