115405417021 has 8 divisors (see below), whose sum is σ = 120880932480. Its totient is φ = 109968058992.

The previous prime is 115405416983. The next prime is 115405417051. The reversal of 115405417021 is 120714504511.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 115405417021 - 2¹¹ = 115405414973 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 (115405417051) 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 7 ways as a sum of consecutive naturals, for example, 9533166 + ... + 9545263.

It is an arithmetic number, because the mean of its divisors is an integer number (15110116560).

Almost surely, 2^115405417021 is an apocalyptic number.

It is an amenable number.

115405417021 is a deficient number, since it is larger than the sum of its proper divisors (5475515459).

115405417021 is a wasteful number, since it uses less digits than its factorization.

115405417021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19078715.

The product of its (nonzero) digits is 5600, while the sum is 31.

The spelling of 115405417021 in words is "one hundred fifteen billion, four hundred five million, four hundred seventeen thousand, twenty-one".