6844921355 has 12 divisors (see below), whose sum is σ = 8271049296. Its totient is φ = 5437866000.

The previous prime is 6844921333. The next prime is 6844921357. The reversal of 6844921355 is 5531294486.

It is not a de Polignac number, because 6844921355 - 2¹⁰ = 6844920331 is a prime.

It is a super-2 number, since 2×6844921355² = 93705896712270072050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6844921357) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2271800 + ... + 2274810.

It is an arithmetic number, because the mean of its divisors is an integer number (689254108).

Almost surely, 2^6844921355 is an apocalyptic number.

6844921355 is a deficient number, since it is larger than the sum of its proper divisors (1426127941).

6844921355 is an frugal number, since it uses more digits than its factorization.

6844921355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6178 (or 3167 counting only the distinct ones).

The product of its digits is 1036800, while the sum is 47.

The square root of 6844921355 is about 82734.0398808133. The cubic root of 6844921355 is about 1898.6991423349.

The spelling of 6844921355 in words is "six billion, eight hundred forty-four million, nine hundred twenty-one thousand, three hundred fifty-five".