12797813515 has 8 divisors (see below), whose sum is σ = 15363728928. Its totient is φ = 10234015680.

The previous prime is 12797813507. The next prime is 12797813521. The reversal of 12797813515 is 51531879721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12797813515 - 2³ = 12797813507 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 516066 + ... + 540295.

It is an arithmetic number, because the mean of its divisors is an integer number (1920466116).

Almost surely, 2^12797813515 is an apocalyptic number.

12797813515 is a deficient number, since it is larger than the sum of its proper divisors (2565915413).

12797813515 is a wasteful number, since it uses less digits than its factorization.

12797813515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1058789.

The product of its digits is 529200, while the sum is 49.

The spelling of 12797813515 in words is "twelve billion, seven hundred ninety-seven million, eight hundred thirteen thousand, five hundred fifteen".