13667422544 has 20 divisors (see below), whose sum is σ = 28038315924. Its totient is φ = 6431728128.

The previous prime is 13667422543. The next prime is 13667422567. The reversal of 13667422544 is 44522476631.

It can be written as a sum of positive squares in 2 ways, for example, as 12681462544 + 985960000 = 112612^2 + 31400^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13667422495 and 13667422504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13667422543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25123667 + ... + 25124210.

Almost surely, 2^13667422544 is an apocalyptic number.

It is an amenable number.

13667422544 is an abundant number, since it is smaller than the sum of its proper divisors (14370893380).

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

13667422544 is a wasteful number, since it uses less digits than its factorization.

13667422544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50247902 (or 50247896 counting only the distinct ones).

The product of its digits is 967680, while the sum is 44.

The spelling of 13667422544 in words is "thirteen billion, six hundred sixty-seven million, four hundred twenty-two thousand, five hundred forty-four".