66375202888 has 24 divisors (see below), whose sum is σ = 125564803650. Its totient is φ = 32893855232.

The previous prime is 66375202879. The next prime is 66375202891. The reversal of 66375202888 is 88820257366.

It can be written as a sum of positive squares in 3 ways, for example, as 20552663044 + 45822539844 = 143362^2 + 214062^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 222733 + ... + 427036.

Almost surely, 2^66375202888 is an apocalyptic number.

It is an amenable number.

66375202888 is a deficient number, since it is larger than the sum of its proper divisors (59189600762).

66375202888 is a wasteful number, since it uses less digits than its factorization.

66375202888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 650001 (or 649884 counting only the distinct ones).

The product of its (nonzero) digits is 7741440, while the sum is 55.

The spelling of 66375202888 in words is "sixty-six billion, three hundred seventy-five million, two hundred two thousand, eight hundred eighty-eight".