7691813890069 has 8 divisors (see below), whose sum is σ = 7769389311288. Its totient is φ = 7614266289600.

The previous prime is 7691813890067. The next prime is 7691813890129. The reversal of 7691813890069 is 9600983181967.

It can be written as a sum of positive squares in 4 ways, for example, as 5130655359025 + 2561158531044 = 2265095^2 + 1600362^2 .

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 7691813890069 - 2¹ = 7691813890067 is a prime.

It is a super-2 number, since 2×7691813890069² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7691813889986 and 7691813890013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7691813890067) 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, 6399222 + ... + 7505575.

It is an arithmetic number, because the mean of its divisors is an integer number (971173663911).

Almost surely, 2^{7691813890069} is an apocalyptic number.

It is an amenable number.

7691813890069 is a deficient number, since it is larger than the sum of its proper divisors (77575421219).

7691813890069 is a wasteful number, since it uses less digits than its factorization.

7691813890069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13910375.

The product of its (nonzero) digits is 35271936, while the sum is 67.

The spelling of 7691813890069 in words is "seven trillion, six hundred ninety-one billion, eight hundred thirteen million, eight hundred ninety thousand, sixty-nine".