20986313640822 has 40 divisors (see below), whose sum is σ = 47107243501032. Its totient is φ = 6983186644800.

The previous prime is 20986313640791. The next prime is 20986313640823. The reversal of 20986313640822 is 22804631368902.

20986313640822 is a `hidden beast` number, since 2 + 0 + 9 + 86 + 3 + 136 + 408 + 22 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20986313640823) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 113344579 + ... + 113529582.

Almost surely, 2^{20986313640822} is an apocalyptic number.

20986313640822 is an abundant number, since it is smaller than the sum of its proper divisors (26120929860210).

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

20986313640822 is a wasteful number, since it uses less digits than its factorization.

20986313640822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226874746 (or 226874737 counting only the distinct ones).

The product of its (nonzero) digits is 5971968, while the sum is 54.

The spelling of 20986313640822 in words is "twenty trillion, nine hundred eighty-six billion, three hundred thirteen million, six hundred forty thousand, eight hundred twenty-two".