12877808605 has 8 divisors (see below), whose sum is σ = 15453985464. Its totient is φ = 10301836800.

The previous prime is 12877808579. The next prime is 12877808609. The reversal of 12877808605 is 50680877821.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4827053529 + 8050755076 = 69477^2 + 89726^2 .

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

It is not a de Polignac number, because 12877808605 - 2⁹ = 12877808093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12877808609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 190965 + ... + 249445.

It is an arithmetic number, because the mean of its divisors is an integer number (1931748183).

Almost surely, 2^12877808605 is an apocalyptic number.

It is an amenable number.

12877808605 is a deficient number, since it is larger than the sum of its proper divisors (2576176859).

12877808605 is an equidigital number, since it uses as much as digits as its factorization.

12877808605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102527.

The product of its (nonzero) digits is 1505280, while the sum is 52.

The spelling of 12877808605 in words is "twelve billion, eight hundred seventy-seven million, eight hundred eight thousand, six hundred five".