9999857093406 has 32 divisors (see below), whose sum is σ = 21052876790400. Its totient is φ = 3157767698400.

The previous prime is 9999857093333. The next prime is 9999857093419. The reversal of 9999857093406 is 6043907589999.

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, 3354081 + ... + 5590131.

It is an arithmetic number, because the mean of its divisors is an integer number (657902399700).

Almost surely, 2^{9999857093406} is an apocalyptic number.

9999857093406 is an abundant number, since it is smaller than the sum of its proper divisors (11053019696994).

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

9999857093406 is a wasteful number, since it uses less digits than its factorization.

9999857093406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2275304.

The product of its (nonzero) digits is 1190427840, while the sum is 78.

The spelling of 9999857093406 in words is "nine trillion, nine hundred ninety-nine billion, eight hundred fifty-seven million, ninety-three thousand, four hundred six".