115015200205243 has 4 divisors (see below), whose sum is σ = 123862523297968. Its totient is φ = 106167877112520.

The previous prime is 115015200205229. The next prime is 115015200205259. The reversal of 115015200205243 is 342502002510511.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 115015200205243 - 2²¹ = 115015198108091 is a prime.

It is not an unprimeable number, because it can be changed into a prime (115015200205043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4423661546343 + ... + 4423661546368.

It is an arithmetic number, because the mean of its divisors is an integer number (30965630824492).

Almost surely, 2^{115015200205243} is an apocalyptic number.

115015200205243 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

115015200205243 is a deficient number, since it is larger than the sum of its proper divisors (8847323092725).

115015200205243 is an equidigital number, since it uses as much as digits as its factorization.

115015200205243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8847323092724.

The product of its (nonzero) digits is 12000, while the sum is 31.

Adding to 115015200205243 its reverse (342502002510511), we get a palindrome (457517202715754).

The spelling of 115015200205243 in words is "one hundred fifteen trillion, fifteen billion, two hundred million, two hundred five thousand, two hundred forty-three".