27251213829869 has 2 divisors, whose sum is σ = 27251213829870. Its totient is φ = 27251213829868.

The previous prime is 27251213829839. The next prime is 27251213829949. The reversal of 27251213829869 is 96892831215272.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18807946996969 + 8443266832900 = 4336813^2 + 2905730^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27251213829869 is a prime.

It is a super-2 number, since 2×27251213829869² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27251213829809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13625606914934 + 13625606914935.

It is an arithmetic number, because the mean of its divisors is an integer number (13625606914935).

Almost surely, 2^{27251213829869} is an apocalyptic number.

It is an amenable number.

27251213829869 is a deficient number, since it is larger than the sum of its proper divisors (1).

27251213829869 is an equidigital number, since it uses as much as digits as its factorization.

27251213829869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 52254720, while the sum is 65.

The spelling of 27251213829869 in words is "twenty-seven trillion, two hundred fifty-one billion, two hundred thirteen million, eight hundred twenty-nine thousand, eight hundred sixty-nine".