13726657673 has 16 divisors (see below), whose sum is σ = 14772300480. Its totient is φ = 12715020864.

The previous prime is 13726657661. The next prime is 13726657723. The reversal of 13726657673 is 37675662731.

It is a cyclic number.

It is not a de Polignac number, because 13726657673 - 2¹⁰ = 13726656649 is a prime.

It is a super-2 number, since 2×13726657673² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13726657073) 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, 271790 + ... + 318312.

It is an arithmetic number, because the mean of its divisors is an integer number (923268780).

Almost surely, 2^13726657673 is an apocalyptic number.

It is an amenable number.

13726657673 is a deficient number, since it is larger than the sum of its proper divisors (1045642807).

13726657673 is a wasteful number, since it uses less digits than its factorization.

13726657673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46888.

The product of its digits is 6667920, while the sum is 53.

The spelling of 13726657673 in words is "thirteen billion, seven hundred twenty-six million, six hundred fifty-seven thousand, six hundred seventy-three".