66700033370220 has 24 divisors (see below), whose sum is σ = 186760093436784. Its totient is φ = 17786675565376.

The previous prime is 66700033370141. The next prime is 66700033370221. The reversal of 66700033370220 is 2207333000766.

It is not an unprimeable number, because it can be changed into a prime (66700033370221) 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, 555833611359 + ... + 555833611478.

It is an arithmetic number, because the mean of its divisors is an integer number (7781670559866).

Almost surely, 2^{66700033370220} is an apocalyptic number.

66700033370220 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

66700033370220 is an abundant number, since it is smaller than the sum of its proper divisors (120060060066564).

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

66700033370220 is a wasteful number, since it uses less digits than its factorization.

66700033370220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1111667222849 (or 1111667222847 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 39.

Adding to 66700033370220 its reverse (2207333000766), we get a palindrome (68907366370986).

The spelling of 66700033370220 in words is "sixty-six trillion, seven hundred billion, thirty-three million, three hundred seventy thousand, two hundred twenty".