8115380912805 has 64 divisors (see below), whose sum is σ = 13375031198208. Its totient is φ = 4198771261440.

The previous prime is 8115380912803. The next prime is 8115380912813. The reversal of 8115380912805 is 5082190835118.

It is not a de Polignac number, because 8115380912805 - 2¹ = 8115380912803 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8115380912803) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 311625585 + ... + 311651625.

It is an arithmetic number, because the mean of its divisors is an integer number (208984862472).

Almost surely, 2^{8115380912805} is an apocalyptic number.

It is an amenable number.

8115380912805 is a deficient number, since it is larger than the sum of its proper divisors (5259650285403).

8115380912805 is a wasteful number, since it uses less digits than its factorization.

8115380912805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27726.

The product of its (nonzero) digits is 691200, while the sum is 51.

The spelling of 8115380912805 in words is "eight trillion, one hundred fifteen billion, three hundred eighty million, nine hundred twelve thousand, eight hundred five".