66450737570 has 64 divisors (see below), whose sum is σ = 140032924416. Its totient is φ = 22228577280.

The previous prime is 66450737567. The next prime is 66450737581. The reversal of 66450737570 is 7573705466.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2808590 + ... + 2832150.

It is an arithmetic number, because the mean of its divisors is an integer number (2188014444).

Almost surely, 2^66450737570 is an apocalyptic number.

66450737570 is an abundant number, since it is smaller than the sum of its proper divisors (73582186846).

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

66450737570 is a wasteful number, since it uses less digits than its factorization.

66450737570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24555.

The product of its (nonzero) digits is 3704400, while the sum is 50.

The spelling of 66450737570 in words is "sixty-six billion, four hundred fifty million, seven hundred thirty-seven thousand, five hundred seventy".