13726657672 has 32 divisors (see below), whose sum is σ = 31676904000. Its totient is φ = 5430325824.

The previous prime is 13726657661. The next prime is 13726657723. The reversal of 13726657672 is 27675662731.

It is a super-2 number, since 2×13726657672² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is an unprimeable number.

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, 9426922 + ... + 9428377.

It is an arithmetic number, because the mean of its divisors is an integer number (989903250).

Almost surely, 2^13726657672 is an apocalyptic number.

It is an amenable number.

13726657672 is an abundant number, since it is smaller than the sum of its proper divisors (17950246328).

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

13726657672 is a wasteful number, since it uses less digits than its factorization.

13726657672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18855325 (or 18855321 counting only the distinct ones).

The product of its digits is 4445280, while the sum is 52.

The spelling of 13726657672 in words is "thirteen billion, seven hundred twenty-six million, six hundred fifty-seven thousand, six hundred seventy-two".