1328026472365 has 4 divisors (see below), whose sum is σ = 1593631766844. Its totient is φ = 1062421177888.

The previous prime is 1328026472351. The next prime is 1328026472401. The reversal of 1328026472365 is 5632746208231.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 140933418921 + 1187093053444 = 375411^2 + 1089538^2 .

It is a cyclic number.

It is not a de Polignac number, because 1328026472365 - 2¹⁹ = 1328025948077 is a prime.

It is a super-2 number, since 2×1328026472365² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132802647232 + ... + 132802647241.

It is an arithmetic number, because the mean of its divisors is an integer number (398407941711).

Almost surely, 2^{1328026472365} is an apocalyptic number.

It is an amenable number.

1328026472365 is a deficient number, since it is larger than the sum of its proper divisors (265605294479).

1328026472365 is an equidigital number, since it uses as much as digits as its factorization.

1328026472365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265605294478.

The product of its (nonzero) digits is 2903040, while the sum is 49.

The spelling of 1328026472365 in words is "one trillion, three hundred twenty-eight billion, twenty-six million, four hundred seventy-two thousand, three hundred sixty-five".