660401046326 has 16 divisors (see below), whose sum is σ = 1155220490400. Its totient is φ = 283029019560.

The previous prime is 660401046293. The next prime is 660401046337. The reversal of 660401046326 is 623640104066.

It is a happy number.

It is a super-2 number, since 2×660401046326² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 660401046326.

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, 481341185 + ... + 481342556.

It is an arithmetic number, because the mean of its divisors is an integer number (72201280650).

Almost surely, 2^660401046326 is an apocalyptic number.

660401046326 is a deficient number, since it is larger than the sum of its proper divisors (494819444074).

660401046326 is an equidigital number, since it uses as much as digits as its factorization.

660401046326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 962683764 (or 962683750 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 38.

The spelling of 660401046326 in words is "six hundred sixty billion, four hundred one million, forty-six thousand, three hundred twenty-six".