20682404496 has 120 divisors (see below), whose sum is σ = 62515052600. Its totient is φ = 6345381888.

The previous prime is 20682404489. The next prime is 20682404513. The reversal of 20682404496 is 69440428602.

It can be written as a sum of positive squares in 4 ways, for example, as 1968164496 + 18714240000 = 44364^2 + 136800^2 .

It is a super-2 number, since 2×20682404496² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 637500 + ... + 669156.

Almost surely, 2^20682404496 is an apocalyptic number.

20682404496 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20682404496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31257526300).

20682404496 is an abundant number, since it is smaller than the sum of its proper divisors (41832648104).

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

20682404496 is a wasteful number, since it uses less digits than its factorization.

20682404496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32033 (or 32024 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 45.

The spelling of 20682404496 in words is "twenty billion, six hundred eighty-two million, four hundred four thousand, four hundred ninety-six".