12815164816 has 20 divisors (see below), whose sum is σ = 24835132672. Its totient is φ = 6406098336.

The previous prime is 12815164811. The next prime is 12815164823. The reversal of 12815164816 is 61846151821.

It is a super-2 number, since 2×12815164816² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12815164811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19776 + ... + 161311.

Almost surely, 2^12815164816 is an apocalyptic number.

12815164816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12815164816 is a deficient number, since it is larger than the sum of its proper divisors (12019967856).

12815164816 is a wasteful number, since it uses less digits than its factorization.

12815164816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185518 (or 185512 counting only the distinct ones).

The product of its digits is 92160, while the sum is 43.

The spelling of 12815164816 in words is "twelve billion, eight hundred fifteen million, one hundred sixty-four thousand, eight hundred sixteen".