20982313608 has 32 divisors (see below), whose sum is σ = 52472016960. Its totient is φ = 6991940160.

The previous prime is 20982313607. The next prime is 20982313613. The reversal of 20982313608 is 80631328902.

It is a self number, because there is not a number n which added to its sum of digits gives 20982313608.

It is not an unprimeable number, because it can be changed into a prime (20982313603) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55135 + ... + 212142.

It is an arithmetic number, because the mean of its divisors is an integer number (1639750530).

Almost surely, 2^20982313608 is an apocalyptic number.

It is an amenable number.

20982313608 is an abundant number, since it is smaller than the sum of its proper divisors (31489703352).

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

20982313608 is a wasteful number, since it uses less digits than its factorization.

20982313608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270557 (or 270553 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 42.

The spelling of 20982313608 in words is "twenty billion, nine hundred eighty-two million, three hundred thirteen thousand, six hundred eight".