8138909526769 has 16 divisors (see below), whose sum is σ = 9391809651840. Its totient is φ = 6908625406080.

The previous prime is 8138909526751. The next prime is 8138909526773. The reversal of 8138909526769 is 9676259098318.

It is a cyclic number.

It is not a de Polignac number, because 8138909526769 - 2¹³ = 8138909518577 is a prime.

It is a super-2 number, since 2×8138909526769² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8138909526749) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1288684 + ... + 4235389.

It is an arithmetic number, because the mean of its divisors is an integer number (586988103240).

Almost surely, 2^{8138909526769} is an apocalyptic number.

It is an amenable number.

8138909526769 is a deficient number, since it is larger than the sum of its proper divisors (1252900125071).

8138909526769 is a wasteful number, since it uses less digits than its factorization.

8138909526769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5526120.

The product of its (nonzero) digits is 352719360, while the sum is 73.

The spelling of 8138909526769 in words is "eight trillion, one hundred thirty-eight billion, nine hundred nine million, five hundred twenty-six thousand, seven hundred sixty-nine".