66654787714 has 16 divisors (see below), whose sum is σ = 101485851552. Its totient is φ = 32829789888.

The previous prime is 66654787709. The next prime is 66654787721. The reversal of 66654787714 is 41778745666.

66654787714 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 867864 + ... + 941539.

It is an arithmetic number, because the mean of its divisors is an integer number (6342865722).

Almost surely, 2^66654787714 is an apocalyptic number.

66654787714 is a deficient number, since it is larger than the sum of its proper divisors (34831063838).

66654787714 is a wasteful number, since it uses less digits than its factorization.

66654787714 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1809681.

The product of its digits is 47416320, while the sum is 61.

The spelling of 66654787714 in words is "sixty-six billion, six hundred fifty-four million, seven hundred eighty-seven thousand, seven hundred fourteen".