1628216513279 has 4 divisors (see below), whose sum is σ = 1628269835376. Its totient is φ = 1628163191184.

The previous prime is 1628216513267. The next prime is 1628216513299. The reversal of 1628216513279 is 9723156128261.

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 1628216513279 - 2²⁸ = 1627948077823 is a prime.

It is a super-2 number, since 2×1628216513279² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1628216513279.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1628216513249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26615219 + ... + 26676324.

It is an arithmetic number, because the mean of its divisors is an integer number (407067458844).

Almost surely, 2^{1628216513279} is an apocalyptic number.

1628216513279 is a deficient number, since it is larger than the sum of its proper divisors (53322097).

1628216513279 is an equidigital number, since it uses as much as digits as its factorization.

1628216513279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53322096.

The product of its digits is 2177280, while the sum is 53.

The spelling of 1628216513279 in words is "one trillion, six hundred twenty-eight billion, two hundred sixteen million, five hundred thirteen thousand, two hundred seventy-nine".