115489783973 has 4 divisors (see below), whose sum is σ = 117213512160. Its totient is φ = 113766055788.

The previous prime is 115489783963. The next prime is 115489783987. The reversal of 115489783973 is 379387984511.

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.

It is a cyclic number.

It is not a de Polignac number, because 115489783973 - 2⁶ = 115489783909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115489783963) 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, 861863993 + ... + 861864126.

It is an arithmetic number, because the mean of its divisors is an integer number (29303378040).

Almost surely, 2^115489783973 is an apocalyptic number.

It is an amenable number.

115489783973 is a deficient number, since it is larger than the sum of its proper divisors (1723728187).

115489783973 is an equidigital number, since it uses as much as digits as its factorization.

115489783973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1723728186.

The product of its digits is 45722880, while the sum is 65.

The spelling of 115489783973 in words is "one hundred fifteen billion, four hundred eighty-nine million, seven hundred eighty-three thousand, nine hundred seventy-three".