12651400277 has 2 divisors, whose sum is σ = 12651400278. Its totient is φ = 12651400276.

The previous prime is 12651400193. The next prime is 12651400283. The reversal of 12651400277 is 77200415621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12649725841 + 1674436 = 112471^2 + 1294^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12651400277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12651400777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6325700138 + 6325700139.

It is an arithmetic number, because the mean of its divisors is an integer number (6325700139).

Almost surely, 2^12651400277 is an apocalyptic number.

It is an amenable number.

12651400277 is a deficient number, since it is larger than the sum of its proper divisors (1).

12651400277 is an equidigital number, since it uses as much as digits as its factorization.

12651400277 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23520, while the sum is 35.

Adding to 12651400277 its reverse (77200415621), we get a palindrome (89851815898).

The spelling of 12651400277 in words is "twelve billion, six hundred fifty-one million, four hundred thousand, two hundred seventy-seven".