383352775661 has 2 divisors, whose sum is σ = 383352775662. Its totient is φ = 383352775660.

The previous prime is 383352775649. The next prime is 383352775669. The reversal of 383352775661 is 166577253383.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 364272602500 + 19080173161 = 603550^2 + 138131^2 .

It is a cyclic number.

It is not a de Polignac number, because 383352775661 - 2³⁸ = 108474868717 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 383352775597 and 383352775606.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (383352775669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 191676387830 + 191676387831.

It is an arithmetic number, because the mean of its divisors is an integer number (191676387831).

Almost surely, 2^383352775661 is an apocalyptic number.

It is an amenable number.

383352775661 is a deficient number, since it is larger than the sum of its proper divisors (1).

383352775661 is an equidigital number, since it uses as much as digits as its factorization.

383352775661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19051200, while the sum is 56.

The spelling of 383352775661 in words is "three hundred eighty-three billion, three hundred fifty-two million, seven hundred seventy-five thousand, six hundred sixty-one".