66164277900 has 72 divisors (see below), whose sum is σ = 218783219200. Its totient is φ = 15123263040.

The previous prime is 66164277887. The next prime is 66164277911. The reversal of 66164277900 is 977246166.

It is a self number, because there is not a number n which added to its sum of digits gives 66164277900.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15751300 + ... + 15755499.

Almost surely, 2^66164277900 is an apocalyptic number.

66164277900 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

66164277900 is an abundant number, since it is smaller than the sum of its proper divisors (152618941300).

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

66164277900 is a wasteful number, since it uses less digits than its factorization.

66164277900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31506823 (or 31506816 counting only the distinct ones).

The product of its (nonzero) digits is 762048, while the sum is 48.

The spelling of 66164277900 in words is "sixty-six billion, one hundred sixty-four million, two hundred seventy-seven thousand, nine hundred".