66164475400 has 48 divisors (see below), whose sum is σ = 153915148800. Its totient is φ = 26451554880.

The previous prime is 66164475397. The next prime is 66164475431. The reversal of 66164475400 is 457446166.

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 11 ways as a sum of consecutive naturals, for example, 287769 + ... + 463831.

It is an arithmetic number, because the mean of its divisors is an integer number (3206565600).

Almost surely, 2^66164475400 is an apocalyptic number.

It is an amenable number.

66164475400 is an abundant number, since it is smaller than the sum of its proper divisors (87750673400).

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

66164475400 is a wasteful number, since it uses less digits than its factorization.

66164475400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177958 (or 177949 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 43.

The spelling of 66164475400 in words is "sixty-six billion, one hundred sixty-four million, four hundred seventy-five thousand, four hundred".