872228643723 has 24 divisors (see below), whose sum is σ = 1267000325136. Its totient is φ = 578202926400.

The previous prime is 872228643697. The next prime is 872228643761. The reversal of 872228643723 is 327346822278.

It is not a de Polignac number, because 872228643723 - 2⁸ = 872228643467 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 872228643723.

It is not an unprimeable number, because it can be changed into a prime (872228648723) 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 23 ways as a sum of consecutive naturals, for example, 15736168 + ... + 15791498.

It is an arithmetic number, because the mean of its divisors is an integer number (52791680214).

Almost surely, 2^872228643723 is an apocalyptic number.

872228643723 is a deficient number, since it is larger than the sum of its proper divisors (394771681413).

872228643723 is a wasteful number, since it uses less digits than its factorization.

872228643723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65195 (or 65192 counting only the distinct ones).

The product of its digits is 10838016, while the sum is 54.

The spelling of 872228643723 in words is "eight hundred seventy-two billion, two hundred twenty-eight million, six hundred forty-three thousand, seven hundred twenty-three".