13978987503238 has 16 divisors (see below), whose sum is σ = 20996158296096. Its totient is φ = 6980273556480.

The previous prime is 13978987503209. The next prime is 13978987503259. The reversal of 13978987503238 is 83230578987931.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3733543 + ... + 6472813.

It is an arithmetic number, because the mean of its divisors is an integer number (1312259893506).

Almost surely, 2^{13978987503238} is an apocalyptic number.

13978987503238 is a deficient number, since it is larger than the sum of its proper divisors (7017170792858).

13978987503238 is a wasteful number, since it uses less digits than its factorization.

13978987503238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2742639.

The product of its (nonzero) digits is 548674560, while the sum is 73.

The spelling of 13978987503238 in words is "thirteen trillion, nine hundred seventy-eight billion, nine hundred eighty-seven million, five hundred three thousand, two hundred thirty-eight".