66345122100 has 36 divisors (see below), whose sum is σ = 191958554144. Its totient is φ = 17692032480.

The previous prime is 66345122093. The next prime is 66345122113. The reversal of 66345122100 is 122154366.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 110574904 + ... + 110575503.

Almost surely, 2^66345122100 is an apocalyptic number.

66345122100 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

66345122100 is an abundant number, since it is smaller than the sum of its proper divisors (125613432044).

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

66345122100 is a wasteful number, since it uses less digits than its factorization.

66345122100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221150424 (or 221150417 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

Adding to 66345122100 its reverse (122154366), we get a palindrome (66467276466).

The spelling of 66345122100 in words is "sixty-six billion, three hundred forty-five million, one hundred twenty-two thousand, one hundred".