20824677008 has 20 divisors (see below), whose sum is σ = 42471381360. Its totient is φ = 9864320544.

The previous prime is 20824676981. The next prime is 20824677109. The reversal of 20824677008 is 80077642802.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 20824677008.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34250810 + ... + 34251417.

It is an arithmetic number, because the mean of its divisors is an integer number (2123569068).

Almost surely, 2^20824677008 is an apocalyptic number.

It is an amenable number.

20824677008 is an abundant number, since it is smaller than the sum of its proper divisors (21646704352).

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

20824677008 is a wasteful number, since it uses less digits than its factorization.

20824677008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68502254 (or 68502248 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 44.

The spelling of 20824677008 in words is "twenty billion, eight hundred twenty-four million, six hundred seventy-seven thousand, eight".