66570525028 has 24 divisors (see below), whose sum is σ = 133146927872. Its totient is φ = 28528965504.

The previous prime is 66570524987. The next prime is 66570525061. The reversal of 66570525028 is 82052507566.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 890101 + ... + 961987.

Almost surely, 2^66570525028 is an apocalyptic number.

It is an amenable number.

66570525028 is an abundant number, since it is smaller than the sum of its proper divisors (66576402844).

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

66570525028 is a wasteful number, since it uses less digits than its factorization.

66570525028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104971 (or 104969 counting only the distinct ones).

The product of its (nonzero) digits is 1008000, while the sum is 46.

The spelling of 66570525028 in words is "sixty-six billion, five hundred seventy million, five hundred twenty-five thousand, twenty-eight".