6815212344 has 40 divisors (see below), whose sum is σ = 19088906760. Its totient is φ = 2271737232.

The previous prime is 6815212319. The next prime is 6815212403. The reversal of 6815212344 is 4432125186.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 6815212299 and 6815212308.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 5258004 + ... + 5259299.

It is an arithmetic number, because the mean of its divisors is an integer number (477222669).

Almost surely, 2^6815212344 is an apocalyptic number.

It is an amenable number.

6815212344 is an abundant number, since it is smaller than the sum of its proper divisors (12273694416).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6815212344 is a wasteful number, since it uses less digits than its factorization.

6815212344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10517321 (or 10517308 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 6815212344 is about 82554.2993671438. The cubic root of 6815212344 is about 1895.9481839709.

It can be divided in two parts, 681521 and 2344, that added together give a triangular number (683865 = T₁₁₆₉).

The spelling of 6815212344 in words is "six billion, eight hundred fifteen million, two hundred twelve thousand, three hundred forty-four".