1971179941668 has 24 divisors (see below), whose sum is σ = 5256479844672. Its totient is φ = 563194269024.

The previous prime is 1971179941631. The next prime is 1971179941697. The reversal of 1971179941668 is 8661499711791.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11733213855 + ... + 11733214022.

It is an arithmetic number, because the mean of its divisors is an integer number (219019993528).

Almost surely, 2^{1971179941668} is an apocalyptic number.

It is an amenable number.

1971179941668 is an abundant number, since it is smaller than the sum of its proper divisors (3285299903004).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1971179941668 is a wasteful number, since it uses less digits than its factorization.

1971179941668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23466427891 (or 23466427889 counting only the distinct ones).

The product of its digits is 41150592, while the sum is 69.

The spelling of 1971179941668 in words is "one trillion, nine hundred seventy-one billion, one hundred seventy-nine million, nine hundred forty-one thousand, six hundred sixty-eight".