788933985221 has 2 divisors, whose sum is σ = 788933985222. Its totient is φ = 788933985220.

The previous prime is 788933985209. The next prime is 788933985227. The reversal of 788933985221 is 122589339887.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 623578708900 + 165355276321 = 789670^2 + 406639^2 .

It is a cyclic number.

It is not a de Polignac number, because 788933985221 - 2⁶ = 788933985157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (788933985227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 394466992610 + 394466992611.

It is an arithmetic number, because the mean of its divisors is an integer number (394466992611).

Almost surely, 2^788933985221 is an apocalyptic number.

It is an amenable number.

788933985221 is a deficient number, since it is larger than the sum of its proper divisors (1).

788933985221 is an equidigital number, since it uses as much as digits as its factorization.

788933985221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52254720, while the sum is 65.

The spelling of 788933985221 in words is "seven hundred eighty-eight billion, nine hundred thirty-three million, nine hundred eighty-five thousand, two hundred twenty-one".