68555167720 has 96 divisors (see below), whose sum is σ = 167265367200. Its totient is φ = 25276582656.

The previous prime is 68555167717. The next prime is 68555167799. The reversal of 68555167720 is 2776155586.

It is a super-2 number, since 2×68555167720² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4988779 + ... + 5002501.

It is an arithmetic number, because the mean of its divisors is an integer number (1742347575).

Almost surely, 2^68555167720 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 68555167720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83632683600).

68555167720 is an abundant number, since it is smaller than the sum of its proper divisors (98710199480).

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

68555167720 is a wasteful number, since it uses less digits than its factorization.

68555167720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14499 (or 14482 counting only the distinct ones).

The product of its (nonzero) digits is 3528000, while the sum is 52.

The spelling of 68555167720 in words is "sixty-eight billion, five hundred fifty-five million, one hundred sixty-seven thousand, seven hundred twenty".