661104313003332 has 216 divisors, whose sum is σ = 1945262449192608. Its totient is φ = 188515745763840.

The previous prime is 661104313003313. The next prime is 661104313003357. The reversal of 661104313003332 is 233300313401166.

661104313003332 is a `hidden beast` number, since 6 + 6 + 1 + 1 + 0 + 4 + 313 + 0 + 0 + 3 + 332 = 666.

661104313003332 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 405213003 + ... + 406841229.

It is an arithmetic number, because the mean of its divisors is an integer number (9005844672188).

Almost surely, 2^{661104313003332} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 661104313003332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (972631224596304).

661104313003332 is an abundant number, since it is smaller than the sum of its proper divisors (1284158136189276).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

661104313003332 is a wasteful number, since it uses less digits than its factorization.

661104313003332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1633759 (or 1633743 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 36.

Adding to 661104313003332 its reverse (233300313401166), we get a palindrome (894404626404498).

The spelling of 661104313003332 in words is "six hundred sixty-one trillion, one hundred four billion, three hundred thirteen million, three thousand, three hundred thirty-two".