68777721204 has 48 divisors (see below), whose sum is σ = 161513787456. Its totient is φ = 22778784000.

The previous prime is 68777721203. The next prime is 68777721319. The reversal of 68777721204 is 40212777786.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68777721203) 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, 1499134 + ... + 1544330.

It is an arithmetic number, because the mean of its divisors is an integer number (3364870572).

Almost surely, 2^68777721204 is an apocalyptic number.

It is an amenable number.

68777721204 is an abundant number, since it is smaller than the sum of its proper divisors (92736066252).

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

68777721204 is a wasteful number, since it uses less digits than its factorization.

68777721204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46016 (or 46014 counting only the distinct ones).

The product of its (nonzero) digits is 1843968, while the sum is 51.

The spelling of 68777721204 in words is "sixty-eight billion, seven hundred seventy-seven million, seven hundred twenty-one thousand, two hundred four".