1987703535171 has 16 divisors (see below), whose sum is σ = 2832395589504. Its totient is φ = 1235530579584.

The previous prime is 1987703535133. The next prime is 1987703535229. The reversal of 1987703535171 is 1715353077891.

It is not a de Polignac number, because 1987703535171 - 2⁹ = 1987703534659 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1987703535131) 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 15 ways as a sum of consecutive naturals, for example, 182118745 + ... + 182129658.

It is an arithmetic number, because the mean of its divisors is an integer number (177024724344).

Almost surely, 2^{1987703535171} is an apocalyptic number.

1987703535171 is a deficient number, since it is larger than the sum of its proper divisors (844692054333).

1987703535171 is a wasteful number, since it uses less digits than its factorization.

1987703535171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364248530.

The product of its (nonzero) digits is 5556600, while the sum is 57.

The spelling of 1987703535171 in words is "one trillion, nine hundred eighty-seven billion, seven hundred three million, five hundred thirty-five thousand, one hundred seventy-one".