13271444264 has 64 divisors (see below), whose sum is σ = 28543006800. Its totient is φ = 5764841472.

The previous prime is 13271444257. The next prime is 13271444267. The reversal of 13271444264 is 46244417231.

It can be written as a sum of positive squares in 8 ways, for example, as 1596641764 + 11674802500 = 39958^2 + 108050^2 .

It is a super-2 number, since 2×13271444264² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13271444267) 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, 276584 + ... + 321000.

Almost surely, 2^13271444264 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13271444264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14271503400).

13271444264 is an abundant number, since it is smaller than the sum of its proper divisors (15271562536).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13271444264 is a wasteful number, since it uses less digits than its factorization.

13271444264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44479 (or 44449 counting only the distinct ones).

The product of its digits is 129024, while the sum is 38.

The spelling of 13271444264 in words is "thirteen billion, two hundred seventy-one million, four hundred forty-four thousand, two hundred sixty-four".