6815212403 has 2 divisors, whose sum is σ = 6815212404. Its totient is φ = 6815212402.

The previous prime is 6815212319. The next prime is 6815212441. The reversal of 6815212403 is 3042125186.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6815212403 - 2²⁸ = 6546776947 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6815212403.

It is not a weakly prime, because it can be changed into another prime (6815217403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3407606201 + 3407606202.

It is an arithmetic number, because the mean of its divisors is an integer number (3407606202).

Almost surely, 2^6815212403 is an apocalyptic number.

6815212403 is a deficient number, since it is larger than the sum of its proper divisors (1).

6815212403 is an equidigital number, since it uses as much as digits as its factorization.

6815212403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 6815212403 is about 82554.2997244844. The cubic root of 6815212403 is about 1895.9481894420.

Adding to 6815212403 its reverse (3042125186), we get a palindrome (9857337589).

The spelling of 6815212403 in words is "six billion, eight hundred fifteen million, two hundred twelve thousand, four hundred three".