8115728369761 has 8 divisors (see below), whose sum is σ = 8471749650624. Its totient is φ = 7759970716080.

The previous prime is 8115728369731. The next prime is 8115728369831. The reversal of 8115728369761 is 1679638275118.

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 8115728369761 - 2²¹ = 8115726272609 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8115728369693 and 8115728369702.

It is not an unprimeable number, because it can be changed into a prime (8115728369731) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65843875 + ... + 65967016.

It is an arithmetic number, because the mean of its divisors is an integer number (1058968706328).

Almost surely, 2^{8115728369761} is an apocalyptic number.

It is an amenable number.

8115728369761 is a deficient number, since it is larger than the sum of its proper divisors (356021280863).

8115728369761 is a wasteful number, since it uses less digits than its factorization.

8115728369761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131813591.

The product of its digits is 30481920, while the sum is 64.

The spelling of 8115728369761 in words is "eight trillion, one hundred fifteen billion, seven hundred twenty-eight million, three hundred sixty-nine thousand, seven hundred sixty-one".