66273037445450 has 144 divisors (see below), whose sum is σ = 137866820521248. Its totient is φ = 23505878592000.

The previous prime is 66273037445441. The next prime is 66273037445501. The reversal of 66273037445450 is 5454473037266.

66273037445450 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 71 ways as a sum of consecutive naturals, for example, 6705756209 + ... + 6705766091.

It is an arithmetic number, because the mean of its divisors is an integer number (957408475842).

Almost surely, 2^{66273037445450} is an apocalyptic number.

66273037445450 is an abundant number, since it is smaller than the sum of its proper divisors (71593783075798).

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

66273037445450 is a wasteful number, since it uses less digits than its factorization.

66273037445450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17241 (or 17195 counting only the distinct ones).

The product of its (nonzero) digits is 50803200, while the sum is 56.

The spelling of 66273037445450 in words is "sixty-six trillion, two hundred seventy-three billion, thirty-seven million, four hundred forty-five thousand, four hundred fifty".