1338432318577 has 8 divisors (see below), whose sum is σ = 1371096902952. Its totient is φ = 1305768681600.

The previous prime is 1338432318533. The next prime is 1338432318589. The reversal of 1338432318577 is 7758132348331.

It can be written as a sum of positive squares in 4 ways, for example, as 22970130481 + 1315462188096 = 151559^2 + 1146936^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1338432318577 - 2¹⁵ = 1338432285809 is a prime.

It is a super-2 number, since 2×1338432318577² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1338432318677) by changing a digit.

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, 3237427 + ... + 3627367.

It is an arithmetic number, because the mean of its divisors is an integer number (171387112869).

Almost surely, 2^{1338432318577} is an apocalyptic number.

It is an amenable number.

1338432318577 is a deficient number, since it is larger than the sum of its proper divisors (32664584375).

1338432318577 is an equidigital number, since it uses as much as digits as its factorization.

1338432318577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473699.

The product of its digits is 10160640, while the sum is 55.

The spelling of 1338432318577 in words is "one trillion, three hundred thirty-eight billion, four hundred thirty-two million, three hundred eighteen thousand, five hundred seventy-seven".