115455521543 has 4 divisors (see below), whose sum is σ = 121532127960. Its totient is φ = 109378915128.

The previous prime is 115455521477. The next prime is 115455521569. The reversal of 115455521543 is 345125554511.

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 115455521543 - 2⁸ = 115455521287 is a prime.

It is a super-2 number, since 2×115455521543² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 115455521543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115455521593) 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, 3038303180 + ... + 3038303217.

It is an arithmetic number, because the mean of its divisors is an integer number (30383031990).

Almost surely, 2^115455521543 is an apocalyptic number.

115455521543 is a deficient number, since it is larger than the sum of its proper divisors (6076606417).

115455521543 is an equidigital number, since it uses as much as digits as its factorization.

115455521543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6076606416.

The product of its digits is 300000, while the sum is 41.

The spelling of 115455521543 in words is "one hundred fifteen billion, four hundred fifty-five million, five hundred twenty-one thousand, five hundred forty-three".