66782607668110 has 64 divisors (see below), whose sum is σ = 124639176591360. Its totient is φ = 25746086361600.

The previous prime is 66782607668047. The next prime is 66782607668113. The reversal of 66782607668110 is 1186670628766.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66782607668113) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 96929335 + ... + 97615885.

It is an arithmetic number, because the mean of its divisors is an integer number (1947487134240).

Almost surely, 2^{66782607668110} is an apocalyptic number.

66782607668110 is a deficient number, since it is larger than the sum of its proper divisors (57856568923250).

66782607668110 is a wasteful number, since it uses less digits than its factorization.

66782607668110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 689761.

The product of its (nonzero) digits is 48771072, while the sum is 64.

The spelling of 66782607668110 in words is "sixty-six trillion, seven hundred eighty-two billion, six hundred seven million, six hundred sixty-eight thousand, one hundred ten".