66575055404 has 24 divisors (see below), whose sum is σ = 136874590608. Its totient is φ = 27933589440.

The previous prime is 66575055373. The next prime is 66575055431. The reversal of 66575055404 is 40455057566.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58194407 + ... + 58195550.

It is an arithmetic number, because the mean of its divisors is an integer number (5703107942).

Almost surely, 2^66575055404 is an apocalyptic number.

It is an amenable number.

66575055404 is an abundant number, since it is smaller than the sum of its proper divisors (70299535204).

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

66575055404 is a wasteful number, since it uses less digits than its factorization.

66575055404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116389985 (or 116389983 counting only the distinct ones).

The product of its (nonzero) digits is 2520000, while the sum is 47.

The spelling of 66575055404 in words is "sixty-six billion, five hundred seventy-five million, fifty-five thousand, four hundred four".