13279721473 has 8 divisors (see below), whose sum is σ = 13305862656. Its totient is φ = 13253604000.

The previous prime is 13279721449. The next prime is 13279721537. The reversal of 13279721473 is 37412797231.

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 13279721473 - 2¹³ = 13279713281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13279721423) 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, 1445013 + ... + 1454173.

It is an arithmetic number, because the mean of its divisors is an integer number (1663232832).

Almost surely, 2^13279721473 is an apocalyptic number.

It is an amenable number.

13279721473 is a deficient number, since it is larger than the sum of its proper divisors (26141183).

13279721473 is an equidigital number, since it uses as much as digits as its factorization.

13279721473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11855.

The product of its digits is 444528, while the sum is 46.

The spelling of 13279721473 in words is "thirteen billion, two hundred seventy-nine million, seven hundred twenty-one thousand, four hundred seventy-three".