871585079740 has 12 divisors (see below), whose sum is σ = 1830328667496. Its totient is φ = 348634031888.

The previous prime is 871585079713. The next prime is 871585079831. The reversal of 871585079740 is 47970585178.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21789626974 + ... + 21789627013.

It is an arithmetic number, because the mean of its divisors is an integer number (152527388958).

Almost surely, 2^871585079740 is an apocalyptic number.

It is an amenable number.

871585079740 is an abundant number, since it is smaller than the sum of its proper divisors (958743587756).

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

871585079740 is a wasteful number, since it uses less digits than its factorization.

871585079740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43579253996 (or 43579253994 counting only the distinct ones).

The product of its (nonzero) digits is 19756800, while the sum is 61.

The spelling of 871585079740 in words is "eight hundred seventy-one billion, five hundred eighty-five million, seventy-nine thousand, seven hundred forty".