66117354626 has 8 divisors (see below), whose sum is σ = 99187535244. Its totient is φ = 33054842880.

The previous prime is 66117354607. The next prime is 66117354659. The reversal of 66117354626 is 62645371166.

It can be written as a sum of positive squares in 2 ways, for example, as 59025188401 + 7092166225 = 242951^2 + 84215^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1895615 + ... + 1930178.

Almost surely, 2^66117354626 is an apocalyptic number.

66117354626 is a deficient number, since it is larger than the sum of its proper divisors (33070180618).

66117354626 is a wasteful number, since it uses less digits than its factorization.

66117354626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3834436.

The product of its digits is 1088640, while the sum is 47.

The spelling of 66117354626 in words is "sixty-six billion, one hundred seventeen million, three hundred fifty-four thousand, six hundred twenty-six".