13144236240 has 40 divisors (see below), whose sum is σ = 40747133088. Its totient is φ = 3505129600.

The previous prime is 13144236197. The next prime is 13144236241. The reversal of 13144236240 is 4263244131.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 13144236198 and 13144236207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13144236241) 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, 27383586 + ... + 27384065.

Almost surely, 2^13144236240 is an apocalyptic number.

13144236240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13144236240 is an abundant number, since it is smaller than the sum of its proper divisors (27602896848).

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

13144236240 is a wasteful number, since it uses less digits than its factorization.

13144236240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54767667 (or 54767661 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

The spelling of 13144236240 in words is "thirteen billion, one hundred forty-four million, two hundred thirty-six thousand, two hundred forty".