870385523805 has 48 divisors (see below), whose sum is σ = 1724257926144. Its totient is φ = 397875375360.

The previous prime is 870385523797. The next prime is 870385523807. The reversal of 870385523805 is 508325583078.

It is a happy number.

870385523805 is a `hidden beast` number, since 8 + 7 + 0 + 3 + 8 + 552 + 3 + 80 + 5 = 666.

It is not a de Polignac number, because 870385523805 - 2³ = 870385523797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (870385523807) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 15908857 + ... + 15963473.

It is an arithmetic number, because the mean of its divisors is an integer number (35922040128).

Almost surely, 2^870385523805 is an apocalyptic number.

It is an amenable number.

870385523805 is a deficient number, since it is larger than the sum of its proper divisors (853872402339).

870385523805 is a wasteful number, since it uses less digits than its factorization.

870385523805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105226 (or 105223 counting only the distinct ones).

The product of its (nonzero) digits is 8064000, while the sum is 54.

The spelling of 870385523805 in words is "eight hundred seventy billion, three hundred eighty-five million, five hundred twenty-three thousand, eight hundred five".