113643121215 has 32 divisors (see below), whose sum is σ = 197645930496. Its totient is φ = 55424499840.

The previous prime is 113643121213. The next prime is 113643121217. The reversal of 113643121215 is 512121346311.

It is an interprime number because it is at equal distance from previous prime (113643121213) and next prime (113643121217).

It is not a de Polignac number, because 113643121215 - 2¹ = 113643121213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113643121213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2702431 + ... + 2744160.

It is an arithmetic number, because the mean of its divisors is an integer number (6176435328).

Almost surely, 2^113643121215 is an apocalyptic number.

113643121215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

113643121215 is a deficient number, since it is larger than the sum of its proper divisors (84002809281).

113643121215 is a wasteful number, since it uses less digits than its factorization.

113643121215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5446719.

The product of its digits is 4320, while the sum is 30.

Adding to 113643121215 its reverse (512121346311), we get a palindrome (625764467526).

The spelling of 113643121215 in words is "one hundred thirteen billion, six hundred forty-three million, one hundred twenty-one thousand, two hundred fifteen".