13987005243 has 8 divisors (see below), whose sum is σ = 18783508800. Its totient is φ = 9257585928.

The previous prime is 13987005223. The next prime is 13987005257. The reversal of 13987005243 is 34250078931.

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

It is not a de Polignac number, because 13987005243 - 2⁸ = 13987004987 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13987005195 and 13987005204.

It is not an unprimeable number, because it can be changed into a prime (13987005223) 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, 16770573 + ... + 16771406.

It is an arithmetic number, because the mean of its divisors is an integer number (2347938600).

Almost surely, 2^13987005243 is an apocalyptic number.

13987005243 is a deficient number, since it is larger than the sum of its proper divisors (4796503557).

13987005243 is a wasteful number, since it uses less digits than its factorization.

13987005243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33542121.

The product of its (nonzero) digits is 181440, while the sum is 42.

The spelling of 13987005243 in words is "thirteen billion, nine hundred eighty-seven million, five thousand, two hundred forty-three".