66909003031 has 8 divisors (see below), whose sum is σ = 72057908384. Its totient is φ = 61760391840.

The previous prime is 66909003017. The next prime is 66909003037. The reversal of 66909003031 is 13030090966.

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

It is a cyclic number.

It is not a de Polignac number, because 66909003031 - 2⁷ = 66909002903 is a prime.

It is a super-2 number, since 2×66909003031² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66909003037) by changing a digit.

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, 701326 + ... + 790996.

It is an arithmetic number, because the mean of its divisors is an integer number (9007238548).

Almost surely, 2^66909003031 is an apocalyptic number.

66909003031 is a deficient number, since it is larger than the sum of its proper divisors (5148905353).

66909003031 is a wasteful number, since it uses less digits than its factorization.

66909003031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147081.

The product of its (nonzero) digits is 26244, while the sum is 37.

Adding to 66909003031 its reverse (13030090966), we get a palindrome (79939093997).

The spelling of 66909003031 in words is "sixty-six billion, nine hundred nine million, three thousand, thirty-one".