12752291081 has 2 divisors, whose sum is σ = 12752291082. Its totient is φ = 12752291080.

The previous prime is 12752291077. The next prime is 12752291089. The reversal of 12752291081 is 18019225721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11275041856 + 1477249225 = 106184^2 + 38435^2 .

It is a cyclic number.

It is not a de Polignac number, because 12752291081 - 2² = 12752291077 is a prime.

It is a super-2 number, since 2×12752291081² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12752291089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6376145540 + 6376145541.

It is an arithmetic number, because the mean of its divisors is an integer number (6376145541).

Almost surely, 2^12752291081 is an apocalyptic number.

It is an amenable number.

12752291081 is a deficient number, since it is larger than the sum of its proper divisors (1).

12752291081 is an equidigital number, since it uses as much as digits as its factorization.

12752291081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 38.

The spelling of 12752291081 in words is "twelve billion, seven hundred fifty-two million, two hundred ninety-one thousand, eighty-one".