20831382700 has 18 divisors (see below), whose sum is σ = 45204100676. Its totient is φ = 8332553040.

The previous prime is 20831382679. The next prime is 20831382707. The reversal of 20831382700 is 728313802.

It is not an unprimeable number, because it can be changed into a prime (20831382707) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 104156814 + ... + 104157013.

Almost surely, 2^20831382700 is an apocalyptic number.

20831382700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20831382700 is an abundant number, since it is smaller than the sum of its proper divisors (24372717976).

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

20831382700 is a wasteful number, since it uses less digits than its factorization.

20831382700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208313841 (or 208313834 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The spelling of 20831382700 in words is "twenty billion, eight hundred thirty-one million, three hundred eighty-two thousand, seven hundred".