9661806862299 has 12 divisors (see below), whose sum is σ = 13956102272736. Its totient is φ = 6441131177712.

The previous prime is 9661806862277. The next prime is 9661806862327. The reversal of 9661806862299 is 9922686081669.

9661806862299 is a `hidden beast` number, since 96 + 61 + 80 + 68 + 62 + 299 = 666.

9661806862299 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9661806862299 - 2¹³ = 9661806854107 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9661806864299) 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, 5276659 + ... + 6867804.

It is an arithmetic number, because the mean of its divisors is an integer number (1163008522728).

Almost surely, 2^{9661806862299} is an apocalyptic number.

9661806862299 is a deficient number, since it is larger than the sum of its proper divisors (4294295410437).

9661806862299 is a wasteful number, since it uses less digits than its factorization.

9661806862299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12232866 (or 12232863 counting only the distinct ones).

The product of its (nonzero) digits is 241864704, while the sum is 72.

The spelling of 9661806862299 in words is "nine trillion, six hundred sixty-one billion, eight hundred six million, eight hundred sixty-two thousand, two hundred ninety-nine".