66300512144 has 10 divisors (see below), whose sum is σ = 128457242310. Its totient is φ = 33150256064.

The previous prime is 66300512129. The next prime is 66300512167. The reversal of 66300512144 is 44121500366.

It can be written as a sum of positive squares in only one way, i.e., 65837401744 + 463110400 = 256588^2 + 21520^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 66300512144.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2071890989 + ... + 2071891020.

It is an arithmetic number, because the mean of its divisors is an integer number (12845724231).

Almost surely, 2^66300512144 is an apocalyptic number.

It is an amenable number.

66300512144 is a deficient number, since it is larger than the sum of its proper divisors (62156730166).

66300512144 is a wasteful number, since it uses less digits than its factorization.

66300512144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4143782017 (or 4143782011 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The spelling of 66300512144 in words is "sixty-six billion, three hundred million, five hundred twelve thousand, one hundred forty-four".