68864783662388 has 18 divisors (see below), whose sum is σ = 140189023884546. Its totient is φ = 29513478712368.

The previous prime is 68864783662351. The next prime is 68864783662403. The reversal of 68864783662388 is 88326638746886.

It can be written as a sum of positive squares in only one way, i.e., 57990235377424 + 10874548284964 = 7615132^2 + 3297658^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 175675468331 + ... + 175675468722.

It is an arithmetic number, because the mean of its divisors is an integer number (7788279104697).

Almost surely, 2^{68864783662388} is an apocalyptic number.

It is an amenable number.

68864783662388 is an abundant number, since it is smaller than the sum of its proper divisors (71324240222158).

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

68864783662388 is a wasteful number, since it uses less digits than its factorization.

68864783662388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351350937071 (or 351350937062 counting only the distinct ones).

The product of its digits is 21403533312, while the sum is 83.

The spelling of 68864783662388 in words is "sixty-eight trillion, eight hundred sixty-four billion, seven hundred eighty-three million, six hundred sixty-two thousand, three hundred eighty-eight".