66207362718 has 96 divisors (see below), whose sum is σ = 157508547840. Its totient is φ = 18172944000.

The previous prime is 66207362671. The next prime is 66207362777. The reversal of 66207362718 is 81726370266.

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 47 ways as a sum of consecutive naturals, for example, 5604418 + ... + 5616218.

It is an arithmetic number, because the mean of its divisors is an integer number (1640714040).

Almost surely, 2^66207362718 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66207362718, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78754273920).

66207362718 is an abundant number, since it is smaller than the sum of its proper divisors (91301185122).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66207362718 is a wasteful number, since it uses less digits than its factorization.

66207362718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12014 (or 11983 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 48.

The spelling of 66207362718 in words is "sixty-six billion, two hundred seven million, three hundred sixty-two thousand, seven hundred eighteen".