1871069805912 has 16 divisors (see below), whose sum is σ = 4677674514840. Its totient is φ = 623689935296.

The previous prime is 1871069805911. The next prime is 1871069805977. The reversal of 1871069805912 is 2195089601781.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1871069805911) 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 3 ways as a sum of consecutive naturals, for example, 38980620933 + ... + 38980620980.

Almost surely, 2^{1871069805912} is an apocalyptic number.

1871069805912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1871069805912 is an abundant number, since it is smaller than the sum of its proper divisors (2806604708928).

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

1871069805912 is a wasteful number, since it uses less digits than its factorization.

1871069805912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77961241922 (or 77961241918 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 57.

The spelling of 1871069805912 in words is "one trillion, eight hundred seventy-one billion, sixty-nine million, eight hundred five thousand, nine hundred twelve".