13544067640 has 16 divisors (see below), whose sum is σ = 30474152280. Its totient is φ = 5417627040.

The previous prime is 13544067613. The next prime is 13544067653. The reversal of 13544067640 is 4676044531.

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 338601691 = 13544067640 / (1 + 3 + 5 + 4 + 4 + 0 + 6 + 7 + 6 + 4 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 13544067593 and 13544067602.

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, 169300806 + ... + 169300885.

Almost surely, 2^13544067640 is an apocalyptic number.

13544067640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13544067640 is an abundant number, since it is smaller than the sum of its proper divisors (16930084640).

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

13544067640 is a wasteful number, since it uses less digits than its factorization.

13544067640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338601702 (or 338601698 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 40.

The spelling of 13544067640 in words is "thirteen billion, five hundred forty-four million, sixty-seven thousand, six hundred forty".