1971095868159 has 16 divisors (see below), whose sum is σ = 2914049334144. Its totient is φ = 1175019890400.

The previous prime is 1971095868103. The next prime is 1971095868163. The reversal of 1971095868159 is 9518685901791.

It is not a de Polignac number, because 1971095868159 - 2²⁰ = 1971094819583 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1971095868093 and 1971095868102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1971095868179) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 489589609 + ... + 489593634.

It is an arithmetic number, because the mean of its divisors is an integer number (182128083384).

Almost surely, 2^{1971095868159} is an apocalyptic number.

1971095868159 is a deficient number, since it is larger than the sum of its proper divisors (942953465985).

1971095868159 is a wasteful number, since it uses less digits than its factorization.

1971095868159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 979183318.

The product of its (nonzero) digits is 48988800, while the sum is 69.

The spelling of 1971095868159 in words is "one trillion, nine hundred seventy-one billion, ninety-five million, eight hundred sixty-eight thousand, one hundred fifty-nine".