20816755032150 has 864 divisors, whose sum is σ = 72052742436480. Its totient is φ = 4260243456000.

The previous prime is 20816755032127. The next prime is 20816755032289. The reversal of 20816755032150 is 5123055761802.

20816755032150 is a `hidden beast` number, since 2 + 0 + 8 + 1 + 6 + 75 + 503 + 21 + 50 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 20816755032096 and 20816755032105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 431 ways as a sum of consecutive naturals, for example, 4645557910 + ... + 4645562390.

It is an arithmetic number, because the mean of its divisors is an integer number (83394377820).

Almost surely, 2^{20816755032150} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20816755032150, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36026371218240).

20816755032150 is an abundant number, since it is smaller than the sum of its proper divisors (51235987404330).

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

20816755032150 is a wasteful number, since it uses less digits than its factorization.

20816755032150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4810 (or 4795 counting only the distinct ones).

The product of its (nonzero) digits is 504000, while the sum is 45.

The spelling of 20816755032150 in words is "twenty trillion, eight hundred sixteen billion, seven hundred fifty-five million, thirty-two thousand, one hundred fifty".