9426809866689 has 12 divisors (see below), whose sum is σ = 13617162389376. Its totient is φ = 6284235642552.

The previous prime is 9426809866657. The next prime is 9426809866693. The reversal of 9426809866689 is 9866689086249.

It is not a de Polignac number, because 9426809866689 - 2⁵ = 9426809866657 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9426809865689) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25159417 + ... + 25531350.

It is an arithmetic number, because the mean of its divisors is an integer number (1134763532448).

Almost surely, 2^{9426809866689} is an apocalyptic number.

It is an amenable number.

9426809866689 is a deficient number, since it is larger than the sum of its proper divisors (4190352522687).

9426809866689 is a wasteful number, since it uses less digits than its factorization.

9426809866689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50711436 (or 50711433 counting only the distinct ones).

The product of its (nonzero) digits is 3869835264, while the sum is 81.

The spelling of 9426809866689 in words is "nine trillion, four hundred twenty-six billion, eight hundred nine million, eight hundred sixty-six thousand, six hundred eighty-nine".