871400565516 has 60 divisors (see below), whose sum is σ = 2202701918872. Its totient is φ = 268123145472.

The previous prime is 871400565479. The next prime is 871400565547. The reversal of 871400565516 is 615565004178.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 928525 + ... + 1613988.

Almost surely, 2^871400565516 is an apocalyptic number.

It is an amenable number.

871400565516 is an abundant number, since it is smaller than the sum of its proper divisors (1331301353356).

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

871400565516 is a wasteful number, since it uses less digits than its factorization.

871400565516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2542572 (or 2542531 counting only the distinct ones).

The product of its (nonzero) digits is 1008000, while the sum is 48.

The spelling of 871400565516 in words is "eight hundred seventy-one billion, four hundred million, five hundred sixty-five thousand, five hundred sixteen".