66555713270 has 16 divisors (see below), whose sum is σ = 119803617648. Its totient is φ = 26621544480.

The previous prime is 66555713173. The next prime is 66555713297. The reversal of 66555713270 is 7231755566.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 419660 + ... + 556080.

It is an arithmetic number, because the mean of its divisors is an integer number (7487726103).

Almost surely, 2^66555713270 is an apocalyptic number.

66555713270 is a deficient number, since it is larger than the sum of its proper divisors (53247904378).

66555713270 is a wasteful number, since it uses less digits than its factorization.

66555713270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185215.

The product of its (nonzero) digits is 1323000, while the sum is 47.

The spelling of 66555713270 in words is "sixty-six billion, five hundred fifty-five million, seven hundred thirteen thousand, two hundred seventy".