12969879616 has 14 divisors (see below), whose sum is σ = 25737104990. Its totient is φ = 6484939776.

The previous prime is 12969879613. The next prime is 12969879661. The reversal of 12969879616 is 61697896921.

It can be written as a sum of positive squares in only one way, i.e., 10617241600 + 2352638016 = 103040^2 + 48504^2 .

It is a Harshad number since it is a multiple of its sum of digits (64), and also a Moran number because the ratio is a prime number: 202654369 = 12969879616 / (1 + 2 + 9 + 6 + 9 + 8 + 7 + 9 + 6 + 1 + 6).

It is not an unprimeable number, because it can be changed into a prime (12969879613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101327121 + ... + 101327248.

Almost surely, 2^12969879616 is an apocalyptic number.

12969879616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12969879616 is a deficient number, since it is larger than the sum of its proper divisors (12767225374).

12969879616 is an equidigital number, since it uses as much as digits as its factorization.

12969879616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202654381 (or 202654371 counting only the distinct ones).

The product of its digits is 17635968, while the sum is 64.

The spelling of 12969879616 in words is "twelve billion, nine hundred sixty-nine million, eight hundred seventy-nine thousand, six hundred sixteen".