195930064505 has 12 divisors (see below), whose sum is σ = 273502376100. Its totient is φ = 134352044064.

The previous prime is 195930064489. The next prime is 195930064591. The reversal of 195930064505 is 505460039591.

It can be written as a sum of positive squares in 2 ways, for example, as 35565056569 + 160365007936 = 188587^2 + 400456^2 .

It is not a de Polignac number, because 195930064505 - 2⁴ = 195930064489 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 195930064505.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 399857030 + ... + 399857519.

It is an arithmetic number, because the mean of its divisors is an integer number (22791864675).

Almost surely, 2^195930064505 is an apocalyptic number.

It is an amenable number.

195930064505 is a deficient number, since it is larger than the sum of its proper divisors (77572311595).

195930064505 is an equidigital number, since it uses as much as digits as its factorization.

195930064505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 799714568 (or 799714561 counting only the distinct ones).

The product of its (nonzero) digits is 729000, while the sum is 47.

The spelling of 195930064505 in words is "one hundred ninety-five billion, nine hundred thirty million, sixty-four thousand, five hundred five".