195687965487 has 32 divisors (see below), whose sum is σ = 305600440320. Its totient is φ = 109045658880.

The previous prime is 195687965483. The next prime is 195687965489. The reversal of 195687965487 is 784569786591.

It is not a de Polignac number, because 195687965487 - 2² = 195687965483 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195687965483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1924714 + ... + 2023832.

It is an arithmetic number, because the mean of its divisors is an integer number (9550013760).

Almost surely, 2^195687965487 is an apocalyptic number.

195687965487 is a deficient number, since it is larger than the sum of its proper divisors (109912474833).

195687965487 is a wasteful number, since it uses less digits than its factorization.

195687965487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101463.

The product of its digits is 914457600, while the sum is 75.

The spelling of 195687965487 in words is "one hundred ninety-five billion, six hundred eighty-seven million, nine hundred sixty-five thousand, four hundred eighty-seven".