28019375801 has 2 divisors, whose sum is σ = 28019375802. Its totient is φ = 28019375800.

The previous prime is 28019375789. The next prime is 28019375849. The reversal of 28019375801 is 10857391082.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16446780025 + 11572595776 = 128245^2 + 107576^2 .

It is a cyclic number.

It is not a de Polignac number, because 28019375801 - 2³⁴ = 10839506617 is a prime.

It is not a weakly prime, because it can be changed into another prime (28019375861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14009687900 + 14009687901.

It is an arithmetic number, because the mean of its divisors is an integer number (14009687901).

Almost surely, 2^28019375801 is an apocalyptic number.

It is an amenable number.

28019375801 is a deficient number, since it is larger than the sum of its proper divisors (1).

28019375801 is an equidigital number, since it uses as much as digits as its factorization.

28019375801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120960, while the sum is 44.

The spelling of 28019375801 in words is "twenty-eight billion, nineteen million, three hundred seventy-five thousand, eight hundred one".