13279721471 has 16 divisors (see below), whose sum is σ = 14074575840. Its totient is φ = 12494684160.

The previous prime is 13279721449. The next prime is 13279721537. The reversal of 13279721471 is 17412797231.

It is a cyclic number.

It is not a de Polignac number, because 13279721471 - 2⁶ = 13279721407 is a prime.

It is a super-3 number, since 3×13279721471³ (a number of 31 digits) contains 333 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 (13279721771) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2465201 + ... + 2470581.

It is an arithmetic number, because the mean of its divisors is an integer number (879660990).

Almost surely, 2^13279721471 is an apocalyptic number.

13279721471 is a deficient number, since it is larger than the sum of its proper divisors (794854369).

13279721471 is a wasteful number, since it uses less digits than its factorization.

13279721471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6266.

The product of its digits is 148176, while the sum is 44.

The spelling of 13279721471 in words is "thirteen billion, two hundred seventy-nine million, seven hundred twenty-one thousand, four hundred seventy-one".