11636386671 has 72 divisors (see below), whose sum is σ = 19837926144. Its totient is φ = 6045399360.

The previous prime is 11636386651. The next prime is 11636386679. The reversal of 11636386671 is 17668363611.

It is not a de Polignac number, because 11636386671 - 2¹⁵ = 11636353903 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11636386671.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11636386679) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1660986 + ... + 1667976.

It is an arithmetic number, because the mean of its divisors is an integer number (275526752).

Almost surely, 2^11636386671 is an apocalyptic number.

11636386671 is a deficient number, since it is larger than the sum of its proper divisors (8201539473).

11636386671 is a wasteful number, since it uses less digits than its factorization.

11636386671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7101 (or 7081 counting only the distinct ones).

The product of its digits is 653184, while the sum is 48.

The spelling of 11636386671 in words is "eleven billion, six hundred thirty-six million, three hundred eighty-six thousand, six hundred seventy-one".