13780281500138 has 8 divisors (see below), whose sum is σ = 20670501814560. Its totient is φ = 6890114228620.

The previous prime is 13780281500131. The next prime is 13780281500147. The reversal of 13780281500138 is 83100518208731.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 13780281500092 and 13780281500101.

It is not an unprimeable number, because it can be changed into a prime (13780281500131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12604748 + ... + 13654311.

It is an arithmetic number, because the mean of its divisors is an integer number (2583812726820).

Almost surely, 2^{13780281500138} is an apocalyptic number.

13780281500138 is a deficient number, since it is larger than the sum of its proper divisors (6890220314422).

13780281500138 is a wasteful number, since it uses less digits than its factorization.

13780281500138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26521452.

The product of its (nonzero) digits is 322560, while the sum is 47.

Adding to 13780281500138 its reverse (83100518208731), we get a palindrome (96880799708869).

The spelling of 13780281500138 in words is "thirteen trillion, seven hundred eighty billion, two hundred eighty-one million, five hundred thousand, one hundred thirty-eight".