20136879200 has 36 divisors (see below), whose sum is σ = 49159158300. Its totient is φ = 8054751360.

The previous prime is 20136879197. The next prime is 20136879209. The reversal of 20136879200 is 297863102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20136879209) 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, 12584750 + ... + 12586349.

It is an arithmetic number, because the mean of its divisors is an integer number (1365532175).

Almost surely, 2^20136879200 is an apocalyptic number.

20136879200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20136879200 is an abundant number, since it is smaller than the sum of its proper divisors (29022279100).

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

20136879200 is a wasteful number, since it uses less digits than its factorization.

20136879200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25171119 (or 25171106 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 38.

The spelling of 20136879200 in words is "twenty billion, one hundred thirty-six million, eight hundred seventy-nine thousand, two hundred".