68007855872 has 144 divisors (see below), whose sum is σ = 153800125920. Its totient is φ = 29741875200.

The previous prime is 68007855871. The next prime is 68007855901. The reversal of 68007855872 is 27855870086.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68007855871) 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, 8424254 + ... + 8432322.

It is an arithmetic number, because the mean of its divisors is an integer number (1068056430).

Almost surely, 2^68007855872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68007855872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76900062960).

68007855872 is an abundant number, since it is smaller than the sum of its proper divisors (85792270048).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68007855872 is a wasteful number, since it uses less digits than its factorization.

68007855872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8210 (or 8196 counting only the distinct ones).

The product of its (nonzero) digits is 7526400, while the sum is 56.

The spelling of 68007855872 in words is "sixty-eight billion, seven million, eight hundred fifty-five thousand, eight hundred seventy-two".