20158886736 has 60 divisors (see below), whose sum is σ = 56636509332. Its totient is φ = 6693470208.

The previous prime is 20158886719. The next prime is 20158886743. The reversal of 20158886736 is 63768885102.

20158886736 is a `hidden beast` number, since 20 + 1 + 588 + 8 + 6 + 7 + 36 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 12621174336 + 7537712400 = 112344^2 + 86820^2 .

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 11 ways as a sum of consecutive naturals, for example, 235351 + ... + 309366.

Almost surely, 2^20158886736 is an apocalyptic number.

It is an amenable number.

20158886736 is an abundant number, since it is smaller than the sum of its proper divisors (36477622596).

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

20158886736 is a wasteful number, since it uses less digits than its factorization.

20158886736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 544988 (or 544979 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 54.

The spelling of 20158886736 in words is "twenty billion, one hundred fifty-eight million, eight hundred eighty-six thousand, seven hundred thirty-six".