7686742125389 has 4 divisors (see below), whose sum is σ = 7689596469756. Its totient is φ = 7683887781024.

The previous prime is 7686742125367. The next prime is 7686742125409. The reversal of 7686742125389 is 9835212476867.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5865478515625 + 1821263609764 = 2421875^2 + 1349542^2 .

It is a cyclic number.

It is not a de Polignac number, because 7686742125389 - 2¹⁶ = 7686742059853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7686742125289) 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, 1427168144 + ... + 1427173529.

It is an arithmetic number, because the mean of its divisors is an integer number (1922399117439).

Almost surely, 2^{7686742125389} is an apocalyptic number.

It is an amenable number.

7686742125389 is a deficient number, since it is larger than the sum of its proper divisors (2854344367).

7686742125389 is a wasteful number, since it uses less digits than its factorization.

7686742125389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2854344366.

The product of its digits is 243855360, while the sum is 68.

The spelling of 7686742125389 in words is "seven trillion, six hundred eighty-six billion, seven hundred forty-two million, one hundred twenty-five thousand, three hundred eighty-nine".