20085669100 has 36 divisors (see below), whose sum is σ = 49812461104. Its totient is φ = 6886514880.

The previous prime is 20085669029. The next prime is 20085669127. The reversal of 20085669100 is 196658002.

It is a self number, because there is not a number n which added to its sum of digits gives 20085669100.

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, 14346207 + ... + 14347606.

Almost surely, 2^20085669100 is an apocalyptic number.

20085669100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20085669100 is an abundant number, since it is smaller than the sum of its proper divisors (29726792004).

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

20085669100 is a wasteful number, since it uses less digits than its factorization.

20085669100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28693834 (or 28693827 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 37.

The spelling of 20085669100 in words is "twenty billion, eighty-five million, six hundred sixty-nine thousand, one hundred".