13138241783887 has 16 divisors (see below), whose sum is σ = 14358985108992. Its totient is φ = 11921893290720.

The previous prime is 13138241783869. The next prime is 13138241783893. The reversal of 13138241783887 is 78838714283131.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 13138241783887 - 2¹¹ = 13138241781839 is a prime.

It is a super-2 number, since 2×13138241783887² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13138241783827) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 247645198 + ... + 247698244.

It is an arithmetic number, because the mean of its divisors is an integer number (897436569312).

Almost surely, 2^{13138241783887} is an apocalyptic number.

13138241783887 is a deficient number, since it is larger than the sum of its proper divisors (1220743325105).

13138241783887 is a wasteful number, since it uses less digits than its factorization.

13138241783887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94038.

The product of its digits is 43352064, while the sum is 64.

The spelling of 13138241783887 in words is "thirteen trillion, one hundred thirty-eight billion, two hundred forty-one million, seven hundred eighty-three thousand, eight hundred eighty-seven".