9999389640246 has 32 divisors (see below), whose sum is σ = 20625000050688. Its totient is φ = 3229980455520.

The previous prime is 9999389640197. The next prime is 9999389640271. The reversal of 9999389640246 is 6420469839999.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 152555125 + ... + 152620656.

It is an arithmetic number, because the mean of its divisors is an integer number (644531251584).

Almost surely, 2^{9999389640246} is an apocalyptic number.

9999389640246 is an abundant number, since it is smaller than the sum of its proper divisors (10625610410442).

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

9999389640246 is a wasteful number, since it uses less digits than its factorization.

9999389640246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305175956.

The product of its (nonzero) digits is 1632586752, while the sum is 78.

The spelling of 9999389640246 in words is "nine trillion, nine hundred ninety-nine billion, three hundred eighty-nine million, six hundred forty thousand, two hundred forty-six".