788362128661 has 2 divisors, whose sum is σ = 788362128662. Its totient is φ = 788362128660.

The previous prime is 788362128607. The next prime is 788362128667. The reversal of 788362128661 is 166821263887.

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., 712023754225 + 76338374436 = 843815^2 + 276294^2 .

It is a cyclic number.

It is not a de Polignac number, because 788362128661 - 2¹¹ = 788362126613 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 788362128596 and 788362128605.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (788362128667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 394181064330 + 394181064331.

It is an arithmetic number, because the mean of its divisors is an integer number (394181064331).

Almost surely, 2^788362128661 is an apocalyptic number.

It is an amenable number.

788362128661 is a deficient number, since it is larger than the sum of its proper divisors (1).

788362128661 is an equidigital number, since it uses as much as digits as its factorization.

788362128661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9289728, while the sum is 58.

The spelling of 788362128661 in words is "seven hundred eighty-eight billion, three hundred sixty-two million, one hundred twenty-eight thousand, six hundred sixty-one".