115320215405 has 8 divisors (see below), whose sum is σ = 139265687832. Its totient is φ = 91668552768.

The previous prime is 115320215383. The next prime is 115320215471. The reversal of 115320215405 is 504512023511.

It can be written as a sum of positive squares in 4 ways, for example, as 24927988996 + 90392226409 = 157886^2 + 300653^2 .

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 115320215405 - 2¹⁰ = 115320214381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73451582 + ... + 73453151.

It is an arithmetic number, because the mean of its divisors is an integer number (17408210979).

Almost surely, 2^115320215405 is an apocalyptic number.

It is an amenable number.

115320215405 is a deficient number, since it is larger than the sum of its proper divisors (23945472427).

115320215405 is a wasteful number, since it uses less digits than its factorization.

115320215405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146904895.

The product of its (nonzero) digits is 6000, while the sum is 29.

Adding to 115320215405 its reverse (504512023511), we get a palindrome (619832238916).

The spelling of 115320215405 in words is "one hundred fifteen billion, three hundred twenty million, two hundred fifteen thousand, four hundred five".