66962628793 has 8 divisors (see below), whose sum is σ = 68245850240. Its totient is φ = 65685390480.

The previous prime is 66962628779. The next prime is 66962628847. The reversal of 66962628793 is 39782626966.

66962628793 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 66962628793 - 2²⁵ = 66929074361 is a prime.

It is a super-2 number, since 2×66962628793² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66962628713) 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, 1473183 + ... + 1517956.

It is an arithmetic number, because the mean of its divisors is an integer number (8530731280).

Almost surely, 2^66962628793 is an apocalyptic number.

It is an amenable number.

66962628793 is a deficient number, since it is larger than the sum of its proper divisors (1283221447).

66962628793 is a wasteful number, since it uses less digits than its factorization.

66962628793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2991567.

The product of its digits is 70543872, while the sum is 64.

The spelling of 66962628793 in words is "sixty-six billion, nine hundred sixty-two million, six hundred twenty-eight thousand, seven hundred ninety-three".