2115386655 has 8 divisors (see below), whose sum is σ = 3384618672. Its totient is φ = 1128206208.

The previous prime is 2115386629. The next prime is 2115386699. The reversal of 2115386655 is 5566835112.

It is a happy number.

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

It is not a de Polignac number, because 2115386655 - 2¹² = 2115382559 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70512874 + ... + 70512903.

It is an arithmetic number, because the mean of its divisors is an integer number (423077334).

Almost surely, 2^2115386655 is an apocalyptic number.

2115386655 is a deficient number, since it is larger than the sum of its proper divisors (1269232017).

2115386655 is a wasteful number, since it uses less digits than its factorization.

2115386655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141025785.

The product of its digits is 216000, while the sum is 42.

The square root of 2115386655 is about 45993.3327233415. The cubic root of 2115386655 is about 1283.6991493634.

The spelling of 2115386655 in words is "two billion, one hundred fifteen million, three hundred eighty-six thousand, six hundred fifty-five".