66320622115 has 16 divisors (see below), whose sum is σ = 87537250656. Its totient is φ = 48233174880.

The previous prime is 66320622113. The next prime is 66320622127. The reversal of 66320622115 is 51122602366.

It is not a de Polignac number, because 66320622115 - 2¹ = 66320622113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66320622113) 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, 4976112 + ... + 4989421.

It is an arithmetic number, because the mean of its divisors is an integer number (5471078166).

Almost surely, 2^66320622115 is an apocalyptic number.

66320622115 is a deficient number, since it is larger than the sum of its proper divisors (21216628541).

66320622115 is an equidigital number, since it uses as much as digits as its factorization.

66320622115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9965571 (or 9965549 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 34.

The spelling of 66320622115 in words is "sixty-six billion, three hundred twenty million, six hundred twenty-two thousand, one hundred fifteen".