11657636388055 has 12 divisors (see below), whose sum is σ = 16273108754280. Its totient is φ = 7993807808784.

The previous prime is 11657636388019. The next prime is 11657636388107. The reversal of 11657636388055 is 55088363675611.

It is not a de Polignac number, because 11657636388055 - 2⁹ = 11657636387543 is a prime.

It is a super-2 number, since 2×11657636388055² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23791094425 + ... + 23791094914.

It is an arithmetic number, because the mean of its divisors is an integer number (1356092396190).

Almost surely, 2^{11657636388055} is an apocalyptic number.

11657636388055 is a deficient number, since it is larger than the sum of its proper divisors (4615472366225).

11657636388055 is an equidigital number, since it uses as much as digits as its factorization.

11657636388055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47582189358 (or 47582189351 counting only the distinct ones).

The product of its (nonzero) digits is 108864000, while the sum is 64.

The spelling of 11657636388055 in words is "eleven trillion, six hundred fifty-seven billion, six hundred thirty-six million, three hundred eighty-eight thousand, fifty-five".