9999928647199 has 4 divisors (see below), whose sum is σ = 10126510022560. Its totient is φ = 9873347271840.

The previous prime is 9999928647161. The next prime is 9999928647211. The reversal of 9999928647199 is 9917468299999.

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

It is a cyclic number.

It is not a de Polignac number, because 9999928647199 - 2³¹ = 9997781163551 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 (9999928647119) 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, 63290687562 + ... + 63290687719.

It is an arithmetic number, because the mean of its divisors is an integer number (2531627505640).

Almost surely, 2^{9999928647199} is an apocalyptic number.

9999928647199 is a deficient number, since it is larger than the sum of its proper divisors (126581375361).

9999928647199 is a wasteful number, since it uses less digits than its factorization.

9999928647199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126581375360.

The product of its digits is 12856620672, while the sum is 91.

The spelling of 9999928647199 in words is "nine trillion, nine hundred ninety-nine billion, nine hundred twenty-eight million, six hundred forty-seven thousand, one hundred ninety-nine".