20169889152 has 256 divisors, whose sum is σ = 63011520000. Its totient is φ = 5597577216.

The previous prime is 20169889141. The next prime is 20169889177. The reversal of 20169889152 is 25198896102.

It is a junction number, because it is equal to n+sod(n) for n = 20169889095 and 20169889104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14113974 + ... + 14115402.

It is an arithmetic number, because the mean of its divisors is an integer number (246138750).

Almost surely, 2^20169889152 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20169889152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31505760000).

20169889152 is an abundant number, since it is smaller than the sum of its proper divisors (42841630848).

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

20169889152 is a wasteful number, since it uses less digits than its factorization.

20169889152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1601 (or 1589 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 51.

The spelling of 20169889152 in words is "twenty billion, one hundred sixty-nine million, eight hundred eighty-nine thousand, one hundred fifty-two".