66617011377222 has 32 divisors (see below), whose sum is σ = 143666982184320. Its totient is φ = 20523854594880.

The previous prime is 66617011377197. The next prime is 66617011377223. The reversal of 66617011377222 is 22277311071666.

66617011377222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66617011377223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7126333728 + ... + 7126343075.

It is an arithmetic number, because the mean of its divisors is an integer number (4489593193260).

Almost surely, 2^{66617011377222} is an apocalyptic number.

66617011377222 is an abundant number, since it is smaller than the sum of its proper divisors (77049970807098).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66617011377222 is a wasteful number, since it uses less digits than its factorization.

66617011377222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14252676868.

The product of its (nonzero) digits is 1778112, while the sum is 51.

The spelling of 66617011377222 in words is "sixty-six trillion, six hundred seventeen billion, eleven million, three hundred seventy-seven thousand, two hundred twenty-two".