20682107904 has 88 divisors (see below), whose sum is σ = 55170088960. Its totient is φ = 6888443904.

The previous prime is 20682107899. The next prime is 20682107969. The reversal of 20682107904 is 40970128602.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5770497 + ... + 5774079.

Almost surely, 2^20682107904 is an apocalyptic number.

20682107904 is a gapful number since it is divisible by the number (24) 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 20682107904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27585044480).

20682107904 is an abundant number, since it is smaller than the sum of its proper divisors (34487981056).

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

20682107904 is a wasteful number, since it uses less digits than its factorization.

20682107904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5485 (or 5467 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 39.

The spelling of 20682107904 in words is "twenty billion, six hundred eighty-two million, one hundred seven thousand, nine hundred four".