66552145726 has 8 divisors (see below), whose sum is σ = 108903511224. Its totient is φ = 30250975320.

The previous prime is 66552145721. The next prime is 66552145727. The reversal of 66552145726 is 62754125566.

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

It is a self number, because there is not a number n which added to its sum of digits gives 66552145726.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66552145721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1512548745 + ... + 1512548788.

It is an arithmetic number, because the mean of its divisors is an integer number (13612938903).

Almost surely, 2^66552145726 is an apocalyptic number.

66552145726 is a deficient number, since it is larger than the sum of its proper divisors (42351365498).

66552145726 is a wasteful number, since it uses less digits than its factorization.

66552145726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3025097546.

The product of its digits is 3024000, while the sum is 49.

The spelling of 66552145726 in words is "sixty-six billion, five hundred fifty-two million, one hundred forty-five thousand, seven hundred twenty-six".