66332720560050 has 480 divisors, whose sum is σ = 222174795617280. Its totient is φ = 14334465801600.

The previous prime is 66332720560049. The next prime is 66332720560079. The reversal of 66332720560050 is 5006502723366.

66332720560050 is a `hidden beast` number, since 6 + 6 + 3 + 32 + 7 + 2 + 0 + 5 + 600 + 5 + 0 = 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 = 66332720559978 and 66332720560005.

It is an unprimeable number.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 264351747 + ... + 264602553.

It is an arithmetic number, because the mean of its divisors is an integer number (462864157536).

Almost surely, 2^{66332720560050} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66332720560050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111087397808640).

66332720560050 is an abundant number, since it is smaller than the sum of its proper divisors (155842075057230).

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

66332720560050 is a wasteful number, since it uses less digits than its factorization.

66332720560050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251348 (or 251334 counting only the distinct ones).

The product of its (nonzero) digits is 1360800, while the sum is 45.

The spelling of 66332720560050 in words is "sixty-six trillion, three hundred thirty-two billion, seven hundred twenty million, five hundred sixty thousand, fifty".