16221547343 has 4 divisors (see below), whose sum is σ = 16527614328. Its totient is φ = 15915480360.

The previous prime is 16221547333. The next prime is 16221547367. The reversal of 16221547343 is 34374512261.

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 16221547343 - 2⁴ = 16221547327 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16221547297 and 16221547306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16221547333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 153033413 + ... + 153033518.

It is an arithmetic number, because the mean of its divisors is an integer number (4131903582).

Almost surely, 2^16221547343 is an apocalyptic number.

16221547343 is a deficient number, since it is larger than the sum of its proper divisors (306066985).

16221547343 is an equidigital number, since it uses as much as digits as its factorization.

16221547343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306066984.

The product of its digits is 120960, while the sum is 38.

The spelling of 16221547343 in words is "sixteen billion, two hundred twenty-one million, five hundred forty-seven thousand, three hundred forty-three".