195769238677 has 2 divisors, whose sum is σ = 195769238678. Its totient is φ = 195769238676.

The previous prime is 195769238669. The next prime is 195769238683. The reversal of 195769238677 is 776832967591.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 193049511876 + 2719726801 = 439374^2 + 52151^2 .

It is a cyclic number.

It is not a de Polignac number, because 195769238677 - 2³ = 195769238669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (195769238617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97884619338 + 97884619339.

It is an arithmetic number, because the mean of its divisors is an integer number (97884619339).

Almost surely, 2^195769238677 is an apocalyptic number.

It is an amenable number.

195769238677 is a deficient number, since it is larger than the sum of its proper divisors (1).

195769238677 is an equidigital number, since it uses as much as digits as its factorization.

195769238677 is an evil number, because the sum of its binary digits is even.

The product of its digits is 240045120, while the sum is 70.

The spelling of 195769238677 in words is "one hundred ninety-five billion, seven hundred sixty-nine million, two hundred thirty-eight thousand, six hundred seventy-seven".