16387663139 has 4 divisors (see below), whose sum is σ = 17100170256. Its totient is φ = 15675156024.

The previous prime is 16387663133. The next prime is 16387663169. The reversal of 16387663139 is 93136678361.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93136678361 = 733 ⋅127062317.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16387663139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16387663133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 356253524 + ... + 356253569.

It is an arithmetic number, because the mean of its divisors is an integer number (4275042564).

Almost surely, 2^16387663139 is an apocalyptic number.

16387663139 is a deficient number, since it is larger than the sum of its proper divisors (712507117).

16387663139 is an equidigital number, since it uses as much as digits as its factorization.

16387663139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 712507116.

The product of its digits is 2939328, while the sum is 53.

The spelling of 16387663139 in words is "sixteen billion, three hundred eighty-seven million, six hundred sixty-three thousand, one hundred thirty-nine".