66822582572 has 12 divisors (see below), whose sum is σ = 119427594720. Its totient is φ = 32700412656.

The previous prime is 66822582557. The next prime is 66822582661. The reversal of 66822582572 is 27528522866.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 177719447 + ... + 177719822.

It is an arithmetic number, because the mean of its divisors is an integer number (9952299560).

Almost surely, 2^66822582572 is an apocalyptic number.

It is an amenable number.

66822582572 is a deficient number, since it is larger than the sum of its proper divisors (52605012148).

66822582572 is a wasteful number, since it uses less digits than its factorization.

66822582572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355439320 (or 355439318 counting only the distinct ones).

The product of its digits is 6451200, while the sum is 53.

The spelling of 66822582572 in words is "sixty-six billion, eight hundred twenty-two million, five hundred eighty-two thousand, five hundred seventy-two".