12945077105 has 4 divisors (see below), whose sum is σ = 15534092532. Its totient is φ = 10356061680.

The previous prime is 12945077083. The next prime is 12945077137. The reversal of 12945077105 is 50177054921.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8430177856 + 4514899249 = 91816^2 + 67193^2 .

It is a de Polignac number, because none of the positive numbers 2^k-12945077105 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1294507706 + ... + 1294507715.

It is an arithmetic number, because the mean of its divisors is an integer number (3883523133).

Almost surely, 2^12945077105 is an apocalyptic number.

It is an amenable number.

12945077105 is a deficient number, since it is larger than the sum of its proper divisors (2589015427).

12945077105 is an equidigital number, since it uses as much as digits as its factorization.

12945077105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2589015426.

The product of its (nonzero) digits is 88200, while the sum is 41.

The spelling of 12945077105 in words is "twelve billion, nine hundred forty-five million, seventy-seven thousand, one hundred five".