2115859311 has 6 divisors (see below), whose sum is σ = 3056241240. Its totient is φ = 1410572868.

The previous prime is 2115859307. The next prime is 2115859313. The reversal of 2115859311 is 1139585112.

2115859311 is a `hidden beast` number, since 2 + 1 + 1 + 58 + 593 + 11 = 666.

It is not a de Polignac number, because 2115859311 - 2² = 2115859307 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2115859313) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 117547731 + ... + 117547748.

It is an arithmetic number, because the mean of its divisors is an integer number (509373540).

Almost surely, 2^2115859311 is an apocalyptic number.

2115859311 is a deficient number, since it is larger than the sum of its proper divisors (940381929).

2115859311 is a wasteful number, since it uses less digits than its factorization.

2115859311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235095485 (or 235095482 counting only the distinct ones).

The product of its digits is 10800, while the sum is 36.

The square root of 2115859311 is about 45998.4707463194. The cubic root of 2115859311 is about 1283.7947509435.

The spelling of 2115859311 in words is "two billion, one hundred fifteen million, eight hundred fifty-nine thousand, three hundred eleven".