9999653158 has 16 divisors (see below), whose sum is σ = 16390316880. Its totient is φ = 4537728000.

The previous prime is 9999653143. The next prime is 9999653171. The reversal of 9999653158 is 8513569999.

It is a self number, because there is not a number n which added to its sum of digits gives 9999653158.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 364923 + ... + 391366.

It is an arithmetic number, because the mean of its divisors is an integer number (1024394805).

Almost surely, 2^9999653158 is an apocalyptic number.

9999653158 is a deficient number, since it is larger than the sum of its proper divisors (6390663722).

9999653158 is a wasteful number, since it uses less digits than its factorization.

9999653158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 756903.

The product of its digits is 23619600, while the sum is 64.

The square root of 9999653158 is about 99998.2657749623. The cubic root of 9999653158 is about 2154.4097814627.

The spelling of 9999653158 in words is "nine billion, nine hundred ninety-nine million, six hundred fifty-three thousand, one hundred fifty-eight".