13644665142 has 16 divisors (see below), whose sum is σ = 27923966400. Its totient is φ = 4442449032.

The previous prime is 13644665141. The next prime is 13644665161. The reversal of 13644665142 is 24156644631.

It is a junction number, because it is equal to n+sod(n) for n = 13644665094 and 13644665103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13644665141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26442892 + ... + 26443407.

It is an arithmetic number, because the mean of its divisors is an integer number (1745247900).

Almost surely, 2^13644665142 is an apocalyptic number.

13644665142 is an abundant number, since it is smaller than the sum of its proper divisors (14279301258).

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

13644665142 is a wasteful number, since it uses less digits than its factorization.

13644665142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52886347.

The product of its digits is 414720, while the sum is 42.

The spelling of 13644665142 in words is "thirteen billion, six hundred forty-four million, six hundred sixty-five thousand, one hundred forty-two".