20782620650 has 48 divisors (see below), whose sum is σ = 43309594080. Its totient is φ = 7353057600.

The previous prime is 20782620647. The next prime is 20782620659. The reversal of 20782620650 is 5602628702.

It is not an unprimeable number, because it can be changed into a prime (20782620659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 490280 + ... + 530979.

It is an arithmetic number, because the mean of its divisors is an integer number (902283210).

Almost surely, 2^20782620650 is an apocalyptic number.

20782620650 is an abundant number, since it is smaller than the sum of its proper divisors (22526973430).

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

20782620650 is a wasteful number, since it uses less digits than its factorization.

20782620650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1021319 (or 1021314 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 38.

The spelling of 20782620650 in words is "twenty billion, seven hundred eighty-two million, six hundred twenty thousand, six hundred fifty".