66572033025660 has 24 divisors (see below), whose sum is σ = 186401692472016. Its totient is φ = 17752542140160.

The previous prime is 66572033025623. The next prime is 66572033025763. The reversal of 66572033025660 is 6652033027566.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 554766941821 + ... + 554766941940.

It is an arithmetic number, because the mean of its divisors is an integer number (7766737186334).

Almost surely, 2^{66572033025660} is an apocalyptic number.

66572033025660 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

66572033025660 is an abundant number, since it is smaller than the sum of its proper divisors (119829659446356).

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

66572033025660 is a wasteful number, since it uses less digits than its factorization.

66572033025660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1109533883773 (or 1109533883771 counting only the distinct ones).

The product of its (nonzero) digits is 8164800, while the sum is 51.

The spelling of 66572033025660 in words is "sixty-six trillion, five hundred seventy-two billion, thirty-three million, twenty-five thousand, six hundred sixty".