7115385769 has 4 divisors (see below), whose sum is σ = 7119809620. Its totient is φ = 7110961920.

The previous prime is 7115385743. The next prime is 7115385779. The reversal of 7115385769 is 9675835117.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9675835117 = 13 ⋅744295009.

It can be written as a sum of positive squares in 2 ways, for example, as 5178241600 + 1937144169 = 71960^2 + 44013^2 .

It is a cyclic number.

It is not a de Polignac number, because 7115385769 - 2¹⁵ = 7115353001 is a prime.

It is a super-2 number, since 2×7115385769² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7115385709) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2209512 + ... + 2212729.

It is an arithmetic number, because the mean of its divisors is an integer number (1779952405).

Almost surely, 2^7115385769 is an apocalyptic number.

It is an amenable number.

7115385769 is a deficient number, since it is larger than the sum of its proper divisors (4423851).

7115385769 is a wasteful number, since it uses less digits than its factorization.

7115385769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4423850.

The product of its digits is 1587600, while the sum is 52.

The square root of 7115385769 is about 84352.7460667405. The cubic root of 7115385769 is about 1923.3846701129.

The spelling of 7115385769 in words is "seven billion, one hundred fifteen million, three hundred eighty-five thousand, seven hundred sixty-nine".