2115636775 has 48 divisors (see below), whose sum is σ = 3068803584. Its totient is φ = 1416804480.

The previous prime is 2115636767. The next prime is 2115636779. The reversal of 2115636775 is 5776365112.

It is not a de Polignac number, because 2115636775 - 2³ = 2115636767 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2115636779) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2847054 + ... + 2847796.

It is an arithmetic number, because the mean of its divisors is an integer number (63933408).

Almost surely, 2^2115636775 is an apocalyptic number.

2115636775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2115636775 is a deficient number, since it is larger than the sum of its proper divisors (953166809).

2115636775 is a wasteful number, since it uses less digits than its factorization.

2115636775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1120 (or 1115 counting only the distinct ones).

The product of its digits is 264600, while the sum is 43.

The square root of 2115636775 is about 45996.0517327303. The cubic root of 2115636775 is about 1283.7497415607.

The spelling of 2115636775 in words is "two billion, one hundred fifteen million, six hundred thirty-six thousand, seven hundred seventy-five".