20734877808 has 60 divisors (see below), whose sum is σ = 58214381680. Its totient is φ = 6889529088.

The previous prime is 20734877803. The next prime is 20734877809. The reversal of 20734877808 is 80877843702.

It is a happy number.

20734877808 is a `hidden beast` number, since 20 + 73 + 487 + 78 + 0 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20734877803) 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, 184948 + ... + 275091.

Almost surely, 2^20734877808 is an apocalyptic number.

It is an amenable number.

20734877808 is an abundant number, since it is smaller than the sum of its proper divisors (37479503872).

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

20734877808 is a wasteful number, since it uses less digits than its factorization.

20734877808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460366 (or 460357 counting only the distinct ones).

The product of its (nonzero) digits is 4214784, while the sum is 54.

It can be divided in two parts, 207348 and 77808, that added together give a square (285156 = 534²).

The spelling of 20734877808 in words is "twenty billion, seven hundred thirty-four million, eight hundred seventy-seven thousand, eight hundred eight".