16387539494827 has 4 divisors (see below), whose sum is σ = 16387626704176. Its totient is φ = 16387452285480.

The previous prime is 16387539494789. The next prime is 16387539494849. The reversal of 16387539494827 is 72849493578361.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16387539494827 - 2¹⁵ = 16387539462059 is a prime.

It is a super-3 number, since 3×16387539494827³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16387539494867) 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, 43322199 + ... + 43698832.

It is an arithmetic number, because the mean of its divisors is an integer number (4096906676044).

Almost surely, 2^{16387539494827} is an apocalyptic number.

16387539494827 is a deficient number, since it is larger than the sum of its proper divisors (87209349).

16387539494827 is an equidigital number, since it uses as much as digits as its factorization.

16387539494827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87209348.

The product of its digits is 2194698240, while the sum is 76.

The spelling of 16387539494827 in words is "sixteen trillion, three hundred eighty-seven billion, five hundred thirty-nine million, four hundred ninety-four thousand, eight hundred twenty-seven".