28881622873387 has 2 divisors, whose sum is σ = 28881622873388. Its totient is φ = 28881622873386.

The previous prime is 28881622873357. The next prime is 28881622873471. The reversal of 28881622873387 is 78337822618882.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28881622873387 is a prime.

It is not a weakly prime, because it can be changed into another prime (28881622873307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14440811436693 + 14440811436694.

It is an arithmetic number, because the mean of its divisors is an integer number (14440811436694).

Almost surely, 2^{28881622873387} is an apocalyptic number.

28881622873387 is a deficient number, since it is larger than the sum of its proper divisors (1).

28881622873387 is an equidigital number, since it uses as much as digits as its factorization.

28881622873387 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 693633024, while the sum is 73.

The spelling of 28881622873387 in words is "twenty-eight trillion, eight hundred eighty-one billion, six hundred twenty-two million, eight hundred seventy-three thousand, three hundred eighty-seven".