66473401775000 has 384 divisors, whose sum is σ = 172668955979520. Its totient is φ = 23786136000000.

The previous prime is 66473401774993. The next prime is 66473401775059. The reversal of 66473401775000 is 57710437466.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is a self number, because there is not a number n which added to its sum of digits gives 66473401775000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 31193523935 + ... + 31193526065.

It is an arithmetic number, because the mean of its divisors is an integer number (449658739530).

Almost surely, 2^{66473401775000} 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 66473401775000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86334477989760).

66473401775000 is an abundant number, since it is smaller than the sum of its proper divisors (106195554204520).

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

66473401775000 is a wasteful number, since it uses less digits than its factorization.

66473401775000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3933 (or 3909 counting only the distinct ones).

The product of its (nonzero) digits is 2963520, while the sum is 50.

The spelling of 66473401775000 in words is "sixty-six trillion, four hundred seventy-three billion, four hundred one million, seven hundred seventy-five thousand".