871400191487 has 32 divisors (see below), whose sum is σ = 1080710292480. Its totient is φ = 685946776320.

The previous prime is 871400191477. The next prime is 871400191511. The reversal of 871400191487 is 784191004178.

It is a cyclic number.

It is not a de Polignac number, because 871400191487 - 2⁶ = 871400191423 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (871400191477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 347198 + ... + 1365044.

It is an arithmetic number, because the mean of its divisors is an integer number (33772196640).

Almost surely, 2^871400191487 is an apocalyptic number.

871400191487 is a deficient number, since it is larger than the sum of its proper divisors (209310100993).

871400191487 is a wasteful number, since it uses less digits than its factorization.

871400191487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1018071.

The product of its (nonzero) digits is 451584, while the sum is 50.

The spelling of 871400191487 in words is "eight hundred seventy-one billion, four hundred million, one hundred ninety-one thousand, four hundred eighty-seven".