16219028687 has 4 divisors (see below), whose sum is σ = 17173089216. Its totient is φ = 15264968160.

The previous prime is 16219028671. The next prime is 16219028701. The reversal of 16219028687 is 78682091261.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78682091261 = 1423 ⋅55293107.

It is a cyclic number.

It is not a de Polignac number, because 16219028687 - 2⁴ = 16219028671 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 (16219048687) 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, 477030239 + ... + 477030272.

It is an arithmetic number, because the mean of its divisors is an integer number (4293272304).

Almost surely, 2^16219028687 is an apocalyptic number.

16219028687 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

16219028687 is a deficient number, since it is larger than the sum of its proper divisors (954060529).

16219028687 is an equidigital number, since it uses as much as digits as its factorization.

16219028687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 954060528.

The product of its (nonzero) digits is 580608, while the sum is 50.

The spelling of 16219028687 in words is "sixteen billion, two hundred nineteen million, twenty-eight thousand, six hundred eighty-seven".