28939350541 has 2 divisors, whose sum is σ = 28939350542. Its totient is φ = 28939350540.

The previous prime is 28939350481. The next prime is 28939350551. The reversal of 28939350541 is 14505393982.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17195076900 + 11744273641 = 131130^2 + 108371^2 .

It is a cyclic number.

It is not a de Polignac number, because 28939350541 - 2¹⁵ = 28939317773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28939350551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14469675270 + 14469675271.

It is an arithmetic number, because the mean of its divisors is an integer number (14469675271).

Almost surely, 2^28939350541 is an apocalyptic number.

It is an amenable number.

28939350541 is a deficient number, since it is larger than the sum of its proper divisors (1).

28939350541 is an equidigital number, since it uses as much as digits as its factorization.

28939350541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1166400, while the sum is 49.

The spelling of 28939350541 in words is "twenty-eight billion, nine hundred thirty-nine million, three hundred fifty thousand, five hundred forty-one".