11639189655 has 24 divisors (see below), whose sum is σ = 21361337712. Its totient is φ = 5842416384.

The previous prime is 11639189633. The next prime is 11639189663. The reversal of 11639189655 is 55698193611.

11639189655 is a `hidden beast` number, since 116 + 391 + 8 + 96 + 55 = 666.

It is not a de Polignac number, because 11639189655 - 2⁹ = 11639189143 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7606549 + ... + 7608078.

It is an arithmetic number, because the mean of its divisors is an integer number (890055738).

Almost surely, 2^11639189655 is an apocalyptic number.

11639189655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11639189655 is a deficient number, since it is larger than the sum of its proper divisors (9722148057).

11639189655 is a wasteful number, since it uses less digits than its factorization.

11639189655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15214655 (or 15214652 counting only the distinct ones).

The product of its digits is 1749600, while the sum is 54.

The spelling of 11639189655 in words is "eleven billion, six hundred thirty-nine million, one hundred eighty-nine thousand, six hundred fifty-five".