20165254200 has 864 divisors, whose sum is σ = 87023336400. Its totient is φ = 4145541120.

The previous prime is 20165254159. The next prime is 20165254223. The reversal of 20165254200 is 245256102.

20165254200 is a `hidden beast` number, since 2 + 0 + 1 + 652 + 5 + 4 + 2 + 0 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 215 ways as a sum of consecutive naturals, for example, 49303596 + ... + 49304004.

Almost surely, 2^20165254200 is an apocalyptic number.

20165254200 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 20165254200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43511668200).

20165254200 is an abundant number, since it is smaller than the sum of its proper divisors (66858082200).

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

20165254200 is a wasteful number, since it uses less digits than its factorization.

20165254200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501 (or 482 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The spelling of 20165254200 in words is "twenty billion, one hundred sixty-five million, two hundred fifty-four thousand, two hundred".