115843217537 has 4 divisors (see below), whose sum is σ = 115861487040. Its totient is φ = 115824948036.

The previous prime is 115843217509. The next prime is 115843217563. The reversal of 115843217537 is 735712348511.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 735712348511 = 7 ⋅105101764073.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-115843217537 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 115843217491 and 115843217500.

It is not an unprimeable number, because it can be changed into a prime (115843217137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9125237 + ... + 9137922.

It is an arithmetic number, because the mean of its divisors is an integer number (28965371760).

Almost surely, 2^115843217537 is an apocalyptic number.

It is an amenable number.

115843217537 is a deficient number, since it is larger than the sum of its proper divisors (18269503).

115843217537 is an equidigital number, since it uses as much as digits as its factorization.

115843217537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18269502.

The product of its digits is 705600, while the sum is 47.

The spelling of 115843217537 in words is "one hundred fifteen billion, eight hundred forty-three million, two hundred seventeen thousand, five hundred thirty-seven".