20671727120 has 120 divisors (see below), whose sum is σ = 54057873408. Its totient is φ = 7342030080.

The previous prime is 20671727101. The next prime is 20671727129. The reversal of 20671727120 is 2172717602.

It is not an unprimeable number, because it can be changed into a prime (20671727129) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 391409 + ... + 441071.

Almost surely, 2^20671727120 is an apocalyptic number.

20671727120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20671727120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27028936704).

20671727120 is an abundant number, since it is smaller than the sum of its proper divisors (33386146288).

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

20671727120 is a wasteful number, since it uses less digits than its factorization.

20671727120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49741 (or 49724 counting only the distinct ones).

The product of its (nonzero) digits is 16464, while the sum is 35.

The spelling of 20671727120 in words is "twenty billion, six hundred seventy-one million, seven hundred twenty-seven thousand, one hundred twenty".