20685862518200 has 48 divisors (see below), whose sum is σ = 52466869483560. Its totient is φ = 7522131824000.

The previous prime is 20685862518187. The next prime is 20685862518227. The reversal of 20685862518200 is 281526858602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4701330191 + ... + 4701334590.

Almost surely, 2^{20685862518200} is an apocalyptic number.

20685862518200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20685862518200 is an abundant number, since it is smaller than the sum of its proper divisors (31781006965360).

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

20685862518200 is a wasteful number, since it uses less digits than its factorization.

20685862518200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9402664808 (or 9402664799 counting only the distinct ones).

The product of its (nonzero) digits is 3686400, while the sum is 53.

The spelling of 20685862518200 in words is "twenty trillion, six hundred eighty-five billion, eight hundred sixty-two million, five hundred eighteen thousand, two hundred".