66453128307 has 48 divisors (see below), whose sum is σ = 100592668800. Its totient is φ = 42218373120.

The previous prime is 66453128303. The next prime is 66453128341. The reversal of 66453128307 is 70382135466.

66453128307 is a `hidden beast` number, since 6 + 64 + 531 + 28 + 30 + 7 = 666.

It is not a de Polignac number, because 66453128307 - 2² = 66453128303 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66453128303) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14887558 + ... + 14892020.

It is an arithmetic number, because the mean of its divisors is an integer number (2095680600).

Almost surely, 2^66453128307 is an apocalyptic number.

66453128307 is a deficient number, since it is larger than the sum of its proper divisors (34139540493).

66453128307 is a wasteful number, since it uses less digits than its factorization.

66453128307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5228 (or 5225 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 45.

The spelling of 66453128307 in words is "sixty-six billion, four hundred fifty-three million, one hundred twenty-eight thousand, three hundred seven".