66124081268 has 24 divisors (see below), whose sum is σ = 132254117184. Its totient is φ = 28337616000.

The previous prime is 66124081217. The next prime is 66124081307. The reversal of 66124081268 is 86218042166.

It is a happy number.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

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 7 ways as a sum of consecutive naturals, for example, 847463 + ... + 922193.

It is an arithmetic number, because the mean of its divisors is an integer number (5510588216).

Almost surely, 2^66124081268 is an apocalyptic number.

It is an amenable number.

66124081268 is an abundant number, since it is smaller than the sum of its proper divisors (66130035916).

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

66124081268 is a wasteful number, since it uses less digits than its factorization.

66124081268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106343 (or 106341 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 44.

The spelling of 66124081268 in words is "sixty-six billion, one hundred twenty-four million, eighty-one thousand, two hundred sixty-eight".