13453721272 has 16 divisors (see below), whose sum is σ = 25581020400. Its totient is φ = 6632115840.

The previous prime is 13453721249. The next prime is 13453721297. The reversal of 13453721272 is 27212735431.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11842497 + ... + 11843632.

It is an arithmetic number, because the mean of its divisors is an integer number (1598813775).

Almost surely, 2^13453721272 is an apocalyptic number.

It is an amenable number.

13453721272 is a deficient number, since it is larger than the sum of its proper divisors (12127299128).

13453721272 is a wasteful number, since it uses less digits than its factorization.

13453721272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23686206 (or 23686202 counting only the distinct ones).

The product of its digits is 70560, while the sum is 37.

The spelling of 13453721272 in words is "thirteen billion, four hundred fifty-three million, seven hundred twenty-one thousand, two hundred seventy-two".