20986313650308 has 36 divisors (see below), whose sum is σ = 53049050038348. Its totient is φ = 6995396640960.

The previous prime is 20986313650307. The next prime is 20986313650327. The reversal of 20986313650308 is 80305631368902.

It is a happy number.

20986313650308 is a `hidden beast` number, since 20 + 9 + 86 + 3 + 1 + 36 + 503 + 0 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 11141830091844 + 9844483558464 = 3337938^2 + 3137592^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (20986313650307) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4812618 + ... + 8070558.

Almost surely, 2^{20986313650308} is an apocalyptic number.

It is an amenable number.

20986313650308 is an abundant number, since it is smaller than the sum of its proper divisors (32062736388040).

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

20986313650308 is a wasteful number, since it uses less digits than its factorization.

20986313650308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3436884 (or 3436879 counting only the distinct ones).

The product of its (nonzero) digits is 5598720, while the sum is 54.

The spelling of 20986313650308 in words is "twenty trillion, nine hundred eighty-six billion, three hundred thirteen million, six hundred fifty thousand, three hundred eight".