1328943661293 has 8 divisors (see below), whose sum is σ = 1771950139456. Its totient is φ = 885949812000.

The previous prime is 1328943661207. The next prime is 1328943661319. The reversal of 1328943661293 is 3921663498231.

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

It is not a de Polignac number, because 1328943661293 - 2⁸ = 1328943661037 is a prime.

It is a super-4 number, since 4×1328943661293⁴ (a number of 50 digits) contains 4444 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 (1328943661093) 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, 2908888 + ... + 3334593.

It is an arithmetic number, because the mean of its divisors is an integer number (221493767432).

Almost surely, 2^{1328943661293} is an apocalyptic number.

It is an amenable number.

1328943661293 is a deficient number, since it is larger than the sum of its proper divisors (443006478163).

1328943661293 is an equidigital number, since it uses as much as digits as its factorization.

1328943661293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6314435.

The product of its digits is 10077696, while the sum is 57.

The spelling of 1328943661293 in words is "one trillion, three hundred twenty-eight billion, nine hundred forty-three million, six hundred sixty-one thousand, two hundred ninety-three".