66723225375 has 64 divisors (see below), whose sum is σ = 116803814400. Its totient is φ = 33775952000.

The previous prime is 66723225313. The next prime is 66723225397. The reversal of 66723225375 is 57352232766.

It is not a de Polignac number, because 66723225375 - 2¹¹ = 66723223327 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 589630 + ... + 693620.

It is an arithmetic number, because the mean of its divisors is an integer number (1825059600).

Almost surely, 2^66723225375 is an apocalyptic number.

66723225375 is a deficient number, since it is larger than the sum of its proper divisors (50080589025).

66723225375 is a wasteful number, since it uses less digits than its factorization.

66723225375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104097 (or 104087 counting only the distinct ones).

The product of its digits is 3175200, while the sum is 48.

The spelling of 66723225375 in words is "sixty-six billion, seven hundred twenty-three million, two hundred twenty-five thousand, three hundred seventy-five".