66962628856 has 16 divisors (see below), whose sum is σ = 132940513440. Its totient is φ = 31511825280.

The previous prime is 66962628847. The next prime is 66962628857. The reversal of 66962628856 is 65882626966.

66962628856 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66962628857) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 246186000 + ... + 246186271.

It is an arithmetic number, because the mean of its divisors is an integer number (8308782090).

Almost surely, 2^66962628856 is an apocalyptic number.

It is an amenable number.

66962628856 is a deficient number, since it is larger than the sum of its proper divisors (65977884584).

66962628856 is a wasteful number, since it uses less digits than its factorization.

66962628856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492372294 (or 492372290 counting only the distinct ones).

The product of its digits is 89579520, while the sum is 64.

The spelling of 66962628856 in words is "sixty-six billion, nine hundred sixty-two million, six hundred twenty-eight thousand, eight hundred fifty-six".