12616072779 has 8 divisors (see below), whose sum is σ = 16824692880. Its totient is φ = 8409083936.

The previous prime is 12616072757. The next prime is 12616072787. The reversal of 12616072779 is 97727061621.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 12616072779 - 2¹² = 12616068683 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12616072379) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 389652 + ... + 420785.

It is an arithmetic number, because the mean of its divisors is an integer number (2103086610).

Almost surely, 2^12616072779 is an apocalyptic number.

12616072779 is a deficient number, since it is larger than the sum of its proper divisors (4208620101).

12616072779 is an equidigital number, since it uses as much as digits as its factorization.

12616072779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 815629.

The product of its (nonzero) digits is 444528, while the sum is 48.

The spelling of 12616072779 in words is "twelve billion, six hundred sixteen million, seventy-two thousand, seven hundred seventy-nine".