871538461538 has 16 divisors (see below), whose sum is σ = 1310383471320. Its totient is φ = 434745163776.

The previous prime is 871538461429. The next prime is 871538461553. The reversal of 871538461538 is 835164835178.

It can be written as a sum of positive squares in 4 ways, for example, as 594707795929 + 276830665609 = 771173^2 + 526147^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1168406 + ... + 1763022.

Almost surely, 2^871538461538 is an apocalyptic number.

871538461538 is a deficient number, since it is larger than the sum of its proper divisors (438845009782).

871538461538 is a wasteful number, since it uses less digits than its factorization.

871538461538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 596341.

The product of its digits is 19353600, while the sum is 59.

The spelling of 871538461538 in words is "eight hundred seventy-one billion, five hundred thirty-eight million, four hundred sixty-one thousand, five hundred thirty-eight".