66713914887 has 8 divisors (see below), whose sum is σ = 89023110000. Its totient is φ = 44440331520.

The previous prime is 66713914879. The next prime is 66713914889. The reversal of 66713914887 is 78841931766.

66713914887 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 66713914887 - 2³ = 66713914879 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66713914887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66713914889) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8898564 + ... + 8906057.

It is an arithmetic number, because the mean of its divisors is an integer number (11127888750).

Almost surely, 2^66713914887 is an apocalyptic number.

66713914887 is a deficient number, since it is larger than the sum of its proper divisors (22309195113).

66713914887 is a wasteful number, since it uses less digits than its factorization.

66713914887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17805873.

The product of its digits is 12192768, while the sum is 60.

The spelling of 66713914887 in words is "sixty-six billion, seven hundred thirteen million, nine hundred fourteen thousand, eight hundred eighty-seven".