66301391049 has 8 divisors (see below), whose sum is σ = 88440416832. Its totient is φ = 44181646320.

The previous prime is 66301391047. The next prime is 66301391063. The reversal of 66301391049 is 94019310366.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 66301391049 - 2¹ = 66301391047 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66301391049.

It is not an unprimeable number, because it can be changed into a prime (66301391041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4812237 + ... + 4825994.

It is an arithmetic number, because the mean of its divisors is an integer number (11055052104).

Almost surely, 2^66301391049 is an apocalyptic number.

It is an amenable number.

66301391049 is a deficient number, since it is larger than the sum of its proper divisors (22139025783).

66301391049 is a wasteful number, since it uses less digits than its factorization.

66301391049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9640527.

The product of its (nonzero) digits is 104976, while the sum is 42.

The spelling of 66301391049 in words is "sixty-six billion, three hundred one million, three hundred ninety-one thousand, forty-nine".