1312433332661 has 8 divisors (see below), whose sum is σ = 1470441277344. Its totient is φ = 1160874691920.

The previous prime is 1312433332643. The next prime is 1312433332723. The reversal of 1312433332661 is 1662333342131.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1312433332661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312433334661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1612325555 + ... + 1612326368.

It is an arithmetic number, because the mean of its divisors is an integer number (183805159668).

Almost surely, 2^{1312433332661} is an apocalyptic number.

1312433332661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1312433332661 is a deficient number, since it is larger than the sum of its proper divisors (158007944683).

1312433332661 is a wasteful number, since it uses less digits than its factorization.

1312433332661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3224651971.

The product of its digits is 139968, while the sum is 38.

Adding to 1312433332661 its reverse (1662333342131), we get a palindrome (2974766674792).

The spelling of 1312433332661 in words is "one trillion, three hundred twelve billion, four hundred thirty-three million, three hundred thirty-two thousand, six hundred sixty-one".