20667717295050 has 192 divisors, whose sum is σ = 58837082185728. Its totient is φ = 4703184000000.

The previous prime is 20667717295033. The next prime is 20667717295061. The reversal of 20667717295050 is 5059271776602.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1202231955 + ... + 1202249145.

It is an arithmetic number, because the mean of its divisors is an integer number (306443136384).

Almost surely, 2^{20667717295050} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20667717295050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29418541092864).

20667717295050 is an abundant number, since it is smaller than the sum of its proper divisors (38169364890678).

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

20667717295050 is a wasteful number, since it uses less digits than its factorization.

20667717295050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22205 (or 22200 counting only the distinct ones).

The product of its (nonzero) digits is 11113200, while the sum is 57.

The spelling of 20667717295050 in words is "twenty trillion, six hundred sixty-seven billion, seven hundred seventeen million, two hundred ninety-five thousand, fifty".