13426591973 has 8 divisors (see below), whose sum is σ = 13788386136. Its totient is φ = 13066432000.

The previous prime is 13426591967. The next prime is 13426591979. The reversal of 13426591973 is 37919562431.

It is an interprime number because it is at equal distance from previous prime (13426591967) and next prime (13426591979).

It can be written as a sum of positive squares in 4 ways, for example, as 4311498244 + 9115093729 = 65662^2 + 95473^2 .

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 13426591973 - 2¹⁰ = 13426590949 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 (13426591979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 391886 + ... + 424767.

It is an arithmetic number, because the mean of its divisors is an integer number (1723548267).

Almost surely, 2^13426591973 is an apocalyptic number.

It is an amenable number.

13426591973 is a deficient number, since it is larger than the sum of its proper divisors (361794163).

13426591973 is an equidigital number, since it uses as much as digits as its factorization.

13426591973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 817095.

The product of its digits is 1224720, while the sum is 50.

The spelling of 13426591973 in words is "thirteen billion, four hundred twenty-six million, five hundred ninety-one thousand, nine hundred seventy-three".