9969126786 has 16 divisors (see below), whose sum is σ = 22153615200. Its totient is φ = 3323042244.

The previous prime is 9969126731. The next prime is 9969126799. The reversal of 9969126786 is 6876219699.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92306676 + ... + 92306783.

It is an arithmetic number, because the mean of its divisors is an integer number (1384600950).

Almost surely, 2^9969126786 is an apocalyptic number.

9969126786 is an abundant number, since it is smaller than the sum of its proper divisors (12184488414).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9969126786 is a wasteful number, since it uses less digits than its factorization.

9969126786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184613470 (or 184613464 counting only the distinct ones).

The product of its digits is 17635968, while the sum is 63.

The square root of 9969126786 is about 99845.5146013080. The cubic root of 9969126786 is about 2152.2152603237.

The spelling of 9969126786 in words is "nine billion, nine hundred sixty-nine million, one hundred twenty-six thousand, seven hundred eighty-six".