28202538101 has 2 divisors, whose sum is σ = 28202538102. Its totient is φ = 28202538100.

The previous prime is 28202538041. The next prime is 28202538121. The reversal of 28202538101 is 10183520282.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14310379876 + 13892158225 = 119626^2 + 117865^2 .

It is a cyclic number.

It is not a de Polignac number, because 28202538101 - 2⁶ = 28202538037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28202538121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14101269050 + 14101269051.

It is an arithmetic number, because the mean of its divisors is an integer number (14101269051).

Almost surely, 2^28202538101 is an apocalyptic number.

It is an amenable number.

28202538101 is a deficient number, since it is larger than the sum of its proper divisors (1).

28202538101 is an equidigital number, since it uses as much as digits as its factorization.

28202538101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7680, while the sum is 32.

The spelling of 28202538101 in words is "twenty-eight billion, two hundred two million, five hundred thirty-eight thousand, one hundred one".