66572145452 has 48 divisors (see below), whose sum is σ = 124626237120. Its totient is φ = 31005683712.

The previous prime is 66572145407. The next prime is 66572145457. The reversal of 66572145452 is 25454127566.

It is a junction number, because it is equal to n+sod(n) for n = 66572145397 and 66572145406.

It is not an unprimeable number, because it can be changed into a prime (66572145457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7281428 + ... + 7290564.

It is an arithmetic number, because the mean of its divisors is an integer number (2596379940).

Almost surely, 2^66572145452 is an apocalyptic number.

It is an amenable number.

66572145452 is a deficient number, since it is larger than the sum of its proper divisors (58054091668).

66572145452 is a wasteful number, since it uses less digits than its factorization.

66572145452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10250 (or 10248 counting only the distinct ones).

The product of its digits is 2016000, while the sum is 47.

It can be divided in two parts, 6657214 and 5452, that added together give a palindrome (6662666).

The spelling of 66572145452 in words is "sixty-six billion, five hundred seventy-two million, one hundred forty-five thousand, four hundred fifty-two".