66598454945 has 8 divisors (see below), whose sum is σ = 87183432000. Its totient is φ = 48435239920.

The previous prime is 66598454927. The next prime is 66598454957. The reversal of 66598454945 is 54945489566.

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

It is a de Polignac number, because none of the positive numbers 2^k-66598454945 is a prime.

It is a super-2 number, since 2×66598454945² (a number of 22 digits) contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 605440445 + ... + 605440554.

It is an arithmetic number, because the mean of its divisors is an integer number (10897929000).

Almost surely, 2^66598454945 is an apocalyptic number.

It is an amenable number.

66598454945 is a deficient number, since it is larger than the sum of its proper divisors (20584977055).

66598454945 is a wasteful number, since it uses less digits than its factorization.

66598454945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1210881015.

The product of its digits is 186624000, while the sum is 65.

The spelling of 66598454945 in words is "sixty-six billion, five hundred ninety-eight million, four hundred fifty-four thousand, nine hundred forty-five".