20685448002 has 48 divisors (see below), whose sum is σ = 42501089376. Its totient is φ = 6711667200.

The previous prime is 20685447997. The next prime is 20685448039. The reversal of 20685448002 is 20084458602.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4950138 + ... + 4954314.

It is an arithmetic number, because the mean of its divisors is an integer number (885439362).

Almost surely, 2^20685448002 is an apocalyptic number.

20685448002 is an abundant number, since it is smaller than the sum of its proper divisors (21815641374).

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

20685448002 is a wasteful number, since it uses less digits than its factorization.

20685448002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4755 (or 4714 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 39.

The spelling of 20685448002 in words is "twenty billion, six hundred eighty-five million, four hundred forty-eight thousand, two".