28397935144387 has 2 divisors, whose sum is σ = 28397935144388. Its totient is φ = 28397935144386.

The previous prime is 28397935144343. The next prime is 28397935144591. The reversal of 28397935144387 is 78344153979382.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28397935144387 - 2¹⁵ = 28397935111619 is a prime.

It is not a weakly prime, because it can be changed into another prime (28397935144307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14198967572193 + 14198967572194.

It is an arithmetic number, because the mean of its divisors is an integer number (14198967572194).

Almost surely, 2^{28397935144387} is an apocalyptic number.

28397935144387 is a deficient number, since it is larger than the sum of its proper divisors (1).

28397935144387 is an equidigital number, since it uses as much as digits as its factorization.

28397935144387 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1097349120, while the sum is 73.

The spelling of 28397935144387 in words is "twenty-eight trillion, three hundred ninety-seven billion, nine hundred thirty-five million, one hundred forty-four thousand, three hundred eighty-seven".