72871585858 has 32 divisors (see below), whose sum is σ = 119502563328. Its totient is φ = 33177446400.

The previous prime is 72871585789. The next prime is 72871585859. The reversal of 72871585858 is 85858517827.

It is a self number, because there is not a number n which added to its sum of digits gives 72871585858.

It is not an unprimeable number, because it can be changed into a prime (72871585859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5506866 + ... + 5520082.

It is an arithmetic number, because the mean of its divisors is an integer number (3734455104).

Almost surely, 2^72871585858 is an apocalyptic number.

72871585858 is a deficient number, since it is larger than the sum of its proper divisors (46630977470).

72871585858 is a wasteful number, since it uses less digits than its factorization.

72871585858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18498.

The product of its digits is 50176000, while the sum is 64.

The spelling of 72871585858 in words is "seventy-two billion, eight hundred seventy-one million, five hundred eighty-five thousand, eight hundred fifty-eight".