28147693529141 has 2 divisors, whose sum is σ = 28147693529142. Its totient is φ = 28147693529140.

The previous prime is 28147693529069. The next prime is 28147693529239. The reversal of 28147693529141 is 14192539674182.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18394277211025 + 9753416318116 = 4288855^2 + 3123046^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28147693529141 is a prime.

It is a super-2 number, since 2×28147693529141² (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 (28147693523141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14073846764570 + 14073846764571.

It is an arithmetic number, because the mean of its divisors is an integer number (14073846764571).

Almost surely, 2^{28147693529141} is an apocalyptic number.

It is an amenable number.

28147693529141 is a deficient number, since it is larger than the sum of its proper divisors (1).

28147693529141 is an equidigital number, since it uses as much as digits as its factorization.

28147693529141 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26127360, while the sum is 62.

The spelling of 28147693529141 in words is "twenty-eight trillion, one hundred forty-seven billion, six hundred ninety-three million, five hundred twenty-nine thousand, one hundred forty-one".