12541132777 has 2 divisors, whose sum is σ = 12541132778. Its totient is φ = 12541132776.

The previous prime is 12541132763. The next prime is 12541132817. The reversal of 12541132777 is 77723114521.

It is a happy number.

It is an a-pointer prime, because the next prime (12541132817) can be obtained adding 12541132777 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12432473001 + 108659776 = 111501^2 + 10424^2 .

It is a cyclic number.

It is not a de Polignac number, because 12541132777 - 2¹⁵ = 12541100009 is a prime.

It is a super-2 number, since 2×12541132777² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12541132727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6270566388 + 6270566389.

It is an arithmetic number, because the mean of its divisors is an integer number (6270566389).

Almost surely, 2^12541132777 is an apocalyptic number.

It is an amenable number.

12541132777 is a deficient number, since it is larger than the sum of its proper divisors (1).

12541132777 is an equidigital number, since it uses as much as digits as its factorization.

12541132777 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 82320, while the sum is 40.

The spelling of 12541132777 in words is "twelve billion, five hundred forty-one million, one hundred thirty-two thousand, seven hundred seventy-seven".