528768627661 has 2 divisors, whose sum is σ = 528768627662. Its totient is φ = 528768627660.

The previous prime is 528768627619. The next prime is 528768627671. The reversal of 528768627661 is 166726867825.

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., 510924744100 + 17843883561 = 714790^2 + 133581^2 .

It is a cyclic number.

It is not a de Polignac number, because 528768627661 - 2⁷ = 528768627533 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 528768627593 and 528768627602.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (528768627671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 264384313830 + 264384313831.

It is an arithmetic number, because the mean of its divisors is an integer number (264384313831).

Almost surely, 2^528768627661 is an apocalyptic number.

It is an amenable number.

528768627661 is a deficient number, since it is larger than the sum of its proper divisors (1).

528768627661 is an equidigital number, since it uses as much as digits as its factorization.

528768627661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 81285120, while the sum is 64.

The spelling of 528768627661 in words is "five hundred twenty-eight billion, seven hundred sixty-eight million, six hundred twenty-seven thousand, six hundred sixty-one".