16163456213451 has 4 divisors (see below), whose sum is σ = 21551274951272. Its totient is φ = 10775637475632.

The previous prime is 16163456213413. The next prime is 16163456213461. The reversal of 16163456213451 is 15431265436161.

16163456213451 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 16163456213451 - 2¹¹ = 16163456211403 is a prime.

It is a super-2 number, since 2×16163456213451² (a number of 27 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 16163456213451.

It is not an unprimeable number, because it can be changed into a prime (16163456213461) 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, 2693909368906 + ... + 2693909368911.

It is an arithmetic number, because the mean of its divisors is an integer number (5387818737818).

Almost surely, 2^{16163456213451} is an apocalyptic number.

16163456213451 is a deficient number, since it is larger than the sum of its proper divisors (5387818737821).

16163456213451 is an equidigital number, since it uses as much as digits as its factorization.

16163456213451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5387818737820.

The product of its digits is 1555200, while the sum is 48.

The spelling of 16163456213451 in words is "sixteen trillion, one hundred sixty-three billion, four hundred fifty-six million, two hundred thirteen thousand, four hundred fifty-one".