6815212299 has 48 divisors (see below), whose sum is σ = 11800608768. Its totient is φ = 3708472896.

The previous prime is 6815212289. The next prime is 6815212301. The reversal of 6815212299 is 9922125186.

It is a happy number.

It is not a de Polignac number, because 6815212299 - 2¹¹ = 6815210251 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6815212259) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 78454 + ... + 140660.

It is an arithmetic number, because the mean of its divisors is an integer number (245846016).

Almost surely, 2^6815212299 is an apocalyptic number.

6815212299 is a deficient number, since it is larger than the sum of its proper divisors (4985396469).

6815212299 is a wasteful number, since it uses less digits than its factorization.

6815212299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62304 (or 62301 counting only the distinct ones).

The product of its digits is 155520, while the sum is 45.

The square root of 6815212299 is about 82554.2990945959. The cubic root of 6815212299 is about 1895.9481797980.

The spelling of 6815212299 in words is "six billion, eight hundred fifteen million, two hundred twelve thousand, two hundred ninety-nine".