66205270888 has 16 divisors (see below), whose sum is σ = 124167581280. Its totient is φ = 33093915888.

The previous prime is 66205270861. The next prime is 66205270891. The reversal of 66205270888 is 88807250266.

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, 1057620 + ... + 1118467.

It is an arithmetic number, because the mean of its divisors is an integer number (7760473830).

Almost surely, 2^66205270888 is an apocalyptic number.

It is an amenable number.

66205270888 is a deficient number, since it is larger than the sum of its proper divisors (57962310392).

66205270888 is a wasteful number, since it uses less digits than its factorization.

66205270888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2179896 (or 2179892 counting only the distinct ones).

The product of its (nonzero) digits is 2580480, while the sum is 52.

The spelling of 66205270888 in words is "sixty-six billion, two hundred five million, two hundred seventy thousand, eight hundred eighty-eight".