20996224158 has 64 divisors (see below), whose sum is σ = 52166177280. Its totient is φ = 5485698432.

The previous prime is 20996224127. The next prime is 20996224163. The reversal of 20996224158 is 85142269902.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 121273 + ... + 238116.

It is an arithmetic number, because the mean of its divisors is an integer number (815096520).

Almost surely, 2^20996224158 is an apocalyptic number.

20996224158 is an abundant number, since it is smaller than the sum of its proper divisors (31169953122).

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

20996224158 is a wasteful number, since it uses less digits than its factorization.

20996224158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359521.

The product of its (nonzero) digits is 622080, while the sum is 48.

The spelling of 20996224158 in words is "twenty billion, nine hundred ninety-six million, two hundred twenty-four thousand, one hundred fifty-eight".