12822538515 has 32 divisors (see below), whose sum is σ = 21079603200. Its totient is φ = 6650999424.

The previous prime is 12822538513. The next prime is 12822538523. The reversal of 12822538515 is 51583522821.

It is a happy number.

It is not a de Polignac number, because 12822538515 - 2¹ = 12822538513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12822538511) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2065386 + ... + 2071584.

It is an arithmetic number, because the mean of its divisors is an integer number (658737600).

Almost surely, 2^12822538515 is an apocalyptic number.

12822538515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12822538515 is a deficient number, since it is larger than the sum of its proper divisors (8257064685).

12822538515 is a wasteful number, since it uses less digits than its factorization.

12822538515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9971.

The product of its digits is 192000, while the sum is 42.

The spelling of 12822538515 in words is "twelve billion, eight hundred twenty-two million, five hundred thirty-eight thousand, five hundred fifteen".