9999678210049 has 32 divisors (see below), whose sum is σ = 11858861427840. Its totient is φ = 8328349286400.

The previous prime is 9999678210031. The next prime is 9999678210073. The reversal of 9999678210049 is 9400128769999.

It is not a de Polignac number, because 9999678210049 - 2⁵ = 9999678210017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9999678210019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1924417 + ... + 4868545.

It is an arithmetic number, because the mean of its divisors is an integer number (370589419620).

Almost surely, 2^{9999678210049} is an apocalyptic number.

It is an amenable number.

9999678210049 is a deficient number, since it is larger than the sum of its proper divisors (1859183217791).

9999678210049 is a wasteful number, since it uses less digits than its factorization.

9999678210049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2944641.

The product of its (nonzero) digits is 158723712, while the sum is 73.

The spelling of 9999678210049 in words is "nine trillion, nine hundred ninety-nine billion, six hundred seventy-eight million, two hundred ten thousand, forty-nine".