66453061112220 has 48 divisors (see below), whose sum is σ = 189579298880160. Its totient is φ = 17386461271296.

The previous prime is 66453061112213. The next prime is 66453061112227. The reversal of 66453061112220 is 2221116035466.

It is an interprime number because it is at equal distance from previous prime (66453061112213) and next prime (66453061112227).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66453061112227) 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, 10448591335 + ... + 10448597694.

It is an arithmetic number, because the mean of its divisors is an integer number (3949568726670).

Almost surely, 2^{66453061112220} is an apocalyptic number.

66453061112220 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

66453061112220 is an abundant number, since it is smaller than the sum of its proper divisors (123126237767940).

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

66453061112220 is a wasteful number, since it uses less digits than its factorization.

66453061112220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20897189094 (or 20897189092 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 39.

Adding to 66453061112220 its reverse (2221116035466), we get a palindrome (68674177147686).

The spelling of 66453061112220 in words is "sixty-six trillion, four hundred fifty-three billion, sixty-one million, one hundred twelve thousand, two hundred twenty".