195064506877 has 2 divisors, whose sum is σ = 195064506878. Its totient is φ = 195064506876.

The previous prime is 195064506853. The next prime is 195064506887. The reversal of 195064506877 is 778605460591.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 146387351236 + 48677155641 = 382606^2 + 220629^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-195064506877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (195064506817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97532253438 + 97532253439.

It is an arithmetic number, because the mean of its divisors is an integer number (97532253439).

Almost surely, 2^195064506877 is an apocalyptic number.

It is an amenable number.

195064506877 is a deficient number, since it is larger than the sum of its proper divisors (1).

195064506877 is an equidigital number, since it uses as much as digits as its factorization.

195064506877 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12700800, while the sum is 58.

The spelling of 195064506877 in words is "one hundred ninety-five billion, sixty-four million, five hundred six thousand, eight hundred seventy-seven".