21063179158 has 16 divisors (see below), whose sum is σ = 36110430720. Its totient is φ = 9026545896.

The previous prime is 21063179153. The next prime is 21063179161. The reversal of 21063179158 is 85197136012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21063179153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 288723 + ... + 354241.

It is an arithmetic number, because the mean of its divisors is an integer number (2256901920).

Almost surely, 2^21063179158 is an apocalyptic number.

21063179158 is a deficient number, since it is larger than the sum of its proper divisors (15047251562).

21063179158 is a wasteful number, since it uses less digits than its factorization.

21063179158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88491.

The product of its (nonzero) digits is 90720, while the sum is 43.

The spelling of 21063179158 in words is "twenty-one billion, sixty-three million, one hundred seventy-nine thousand, one hundred fifty-eight".