66648231710 has 32 divisors (see below), whose sum is σ = 121405923360. Its totient is φ = 26341391232.

The previous prime is 66648231697. The next prime is 66648231739. The reversal of 66648231710 is 1713284666.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 162452 + ... + 399608.

It is an arithmetic number, because the mean of its divisors is an integer number (3793935105).

Almost surely, 2^66648231710 is an apocalyptic number.

66648231710 is a deficient number, since it is larger than the sum of its proper divisors (54757691650).

66648231710 is a wasteful number, since it uses less digits than its factorization.

66648231710 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237500.

The product of its (nonzero) digits is 290304, while the sum is 44.

The spelling of 66648231710 in words is "sixty-six billion, six hundred forty-eight million, two hundred thirty-one thousand, seven hundred ten".