66284707445 has 16 divisors (see below), whose sum is σ = 86960155392. Its totient is φ = 48102922560.

The previous prime is 66284707441. The next prime is 66284707457. The reversal of 66284707445 is 54470748266.

It is not a de Polignac number, because 66284707445 - 2² = 66284707441 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66284707441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1276022 + ... + 1326951.

It is an arithmetic number, because the mean of its divisors is an integer number (5435009712).

Almost surely, 2^66284707445 is an apocalyptic number.

It is an amenable number.

66284707445 is a deficient number, since it is larger than the sum of its proper divisors (20675447947).

66284707445 is a wasteful number, since it uses less digits than its factorization.

66284707445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2603452.

The product of its (nonzero) digits is 9031680, while the sum is 53.

The spelling of 66284707445 in words is "sixty-six billion, two hundred eighty-four million, seven hundred seven thousand, four hundred forty-five".