66577425712 has 20 divisors (see below), whose sum is σ = 147421442896. Its totient is φ = 28533182400.

The previous prime is 66577425689. The next prime is 66577425713. The reversal of 66577425712 is 21752477566.

It is a super-2 number, since 2×66577425712² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 66577425712.

It is not an unprimeable number, because it can be changed into a prime (66577425713) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 297220539 + ... + 297220762.

Almost surely, 2^66577425712 is an apocalyptic number.

It is an amenable number.

66577425712 is an abundant number, since it is smaller than the sum of its proper divisors (80844017184).

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

66577425712 is a wasteful number, since it uses less digits than its factorization.

66577425712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 594441316 (or 594441310 counting only the distinct ones).

The product of its digits is 4939200, while the sum is 52.

The spelling of 66577425712 in words is "sixty-six billion, five hundred seventy-seven million, four hundred twenty-five thousand, seven hundred twelve".