68724628887 has 16 divisors (see below), whose sum is σ = 91798518240. Its totient is φ = 45733632000.

The previous prime is 68724628879. The next prime is 68724628919. The reversal of 68724628887 is 78882642786.

It is not a de Polignac number, because 68724628887 - 2³ = 68724628879 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68724628807) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7905039 + ... + 7913727.

It is an arithmetic number, because the mean of its divisors is an integer number (5737407390).

Almost surely, 2^68724628887 is an apocalyptic number.

68724628887 is a deficient number, since it is larger than the sum of its proper divisors (23073889353).

68724628887 is a wasteful number, since it uses less digits than its factorization.

68724628887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13154.

The product of its digits is 115605504, while the sum is 66.

The spelling of 68724628887 in words is "sixty-eight billion, seven hundred twenty-four million, six hundred twenty-eight thousand, eight hundred eighty-seven".