872635747892 has 12 divisors (see below), whose sum is σ = 1527125969376. Its totient is φ = 436314042360.

The previous prime is 872635747873. The next prime is 872635747913. The reversal of 872635747892 is 298747536278.

It is a super-4 number, since 4×872635747892⁴ (a number of 49 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 410738 + ... + 1383465.

It is an arithmetic number, because the mean of its divisors is an integer number (127260497448).

Almost surely, 2^872635747892 is an apocalyptic number.

It is an amenable number.

872635747892 is a deficient number, since it is larger than the sum of its proper divisors (654490221484).

872635747892 is a wasteful number, since it uses less digits than its factorization.

872635747892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1915798 (or 1915796 counting only the distinct ones).

The product of its digits is 284497920, while the sum is 68.

The spelling of 872635747892 in words is "eight hundred seventy-two billion, six hundred thirty-five million, seven hundred forty-seven thousand, eight hundred ninety-two".