66122043100 has 18 divisors (see below), whose sum is σ = 143484833744. Its totient is φ = 26448817200.

The previous prime is 66122043077. The next prime is 66122043103. The reversal of 66122043100 is 134022166.

It is a super-2 number, since 2×66122043100² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66122043103) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 330610116 + ... + 330610315.

Almost surely, 2^66122043100 is an apocalyptic number.

It is an amenable number.

66122043100 is an abundant number, since it is smaller than the sum of its proper divisors (77362790644).

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

66122043100 is a wasteful number, since it uses less digits than its factorization.

66122043100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661220445 (or 661220438 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 66122043100 its reverse (134022166), we get a palindrome (66256065266).

The spelling of 66122043100 in words is "sixty-six billion, one hundred twenty-two million, forty-three thousand, one hundred".