20808361368 has 48 divisors (see below), whose sum is σ = 56734236000. Its totient is φ = 6889565760.

The previous prime is 20808361363. The next prime is 20808361433. The reversal of 20808361368 is 86316380802.

20808361368 is a `hidden beast` number, since 20 + 8 + 0 + 8 + 3 + 613 + 6 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20808361363) 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, 959088 + ... + 980543.

It is an arithmetic number, because the mean of its divisors is an integer number (1181963250).

Almost surely, 2^20808361368 is an apocalyptic number.

It is an amenable number.

20808361368 is an abundant number, since it is smaller than the sum of its proper divisors (35925874632).

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

20808361368 is a wasteful number, since it uses less digits than its factorization.

20808361368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1939792 (or 1939785 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The spelling of 20808361368 in words is "twenty billion, eight hundred eight million, three hundred sixty-one thousand, three hundred sixty-eight".