66075317730222 has 16 divisors (see below), whose sum is σ = 137896315263360. Its totient is φ = 21067492609592.

The previous prime is 66075317730221. The next prime is 66075317730223. The reversal of 66075317730222 is 22203771357066.

It is an interprime number because it is at equal distance from previous prime (66075317730221) and next prime (66075317730223).

It is a super-2 number, since 2×66075317730222² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66075317730221) 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, 239403324972 + ... + 239403325247.

It is an arithmetic number, because the mean of its divisors is an integer number (8618519703960).

Almost surely, 2^{66075317730222} is an apocalyptic number.

66075317730222 is an abundant number, since it is smaller than the sum of its proper divisors (71820997533138).

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

66075317730222 is a wasteful number, since it uses less digits than its factorization.

66075317730222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478806650247.

The product of its (nonzero) digits is 4445280, while the sum is 51.

The spelling of 66075317730222 in words is "sixty-six trillion, seventy-five billion, three hundred seventeen million, seven hundred thirty thousand, two hundred twenty-two".