12753776905 has 8 divisors (see below), whose sum is σ = 15317812872. Its totient is φ = 10194167808.

The previous prime is 12753776857. The next prime is 12753776911. The reversal of 12753776905 is 50967735721.

It can be written as a sum of positive squares in 4 ways, for example, as 5736699081 + 7017077824 = 75741^2 + 83768^2 .

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 12753776905 - 2³³ = 4163842313 is a prime.

It is a super-2 number, since 2×12753776905² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1100374 + ... + 1111903.

It is an arithmetic number, because the mean of its divisors is an integer number (1914726609).

Almost surely, 2^12753776905 is an apocalyptic number.

It is an amenable number.

12753776905 is a deficient number, since it is larger than the sum of its proper divisors (2564035967).

12753776905 is a wasteful number, since it uses less digits than its factorization.

12753776905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2213435.

The product of its (nonzero) digits is 2778300, while the sum is 52.

The spelling of 12753776905 in words is "twelve billion, seven hundred fifty-three million, seven hundred seventy-six thousand, nine hundred five".