28538951611 has 2 divisors, whose sum is σ = 28538951612. Its totient is φ = 28538951610.

The previous prime is 28538951593. The next prime is 28538951621. The reversal of 28538951611 is 11615983582.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28538951611 - 2¹⁵ = 28538918843 is a prime.

It is not a weakly prime, because it can be changed into another prime (28538951621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14269475805 + 14269475806.

It is an arithmetic number, because the mean of its divisors is an integer number (14269475806).

Almost surely, 2^28538951611 is an apocalyptic number.

28538951611 is a deficient number, since it is larger than the sum of its proper divisors (1).

28538951611 is an equidigital number, since it uses as much as digits as its factorization.

28538951611 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 518400, while the sum is 49.

The spelling of 28538951611 in words is "twenty-eight billion, five hundred thirty-eight million, nine hundred fifty-one thousand, six hundred eleven".