16236273887 has 4 divisors (see below), whose sum is σ = 16397029176. Its totient is φ = 16075518600.

The previous prime is 16236273847. The next prime is 16236273941. The reversal of 16236273887 is 78837263261.

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 16236273887 - 2²⁰ = 16235225311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16236273847) 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, 80377493 + ... + 80377694.

It is an arithmetic number, because the mean of its divisors is an integer number (4099257294).

Almost surely, 2^16236273887 is an apocalyptic number.

16236273887 is a deficient number, since it is larger than the sum of its proper divisors (160755289).

16236273887 is a wasteful number, since it uses less digits than its factorization.

16236273887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160755288.

The product of its digits is 4064256, while the sum is 53.

The spelling of 16236273887 in words is "sixteen billion, two hundred thirty-six million, two hundred seventy-three thousand, eight hundred eighty-seven".