68211712038390 has 64 divisors (see below), whose sum is σ = 168990900480000. Its totient is φ = 17602826123520.

The previous prime is 68211712038373. The next prime is 68211712038413. The reversal of 68211712038390 is 9383021711286.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 94966282 + ... + 95681858.

It is an arithmetic number, because the mean of its divisors is an integer number (2640482820000).

Almost surely, 2^{68211712038390} is an apocalyptic number.

68211712038390 is an abundant number, since it is smaller than the sum of its proper divisors (100779188441610).

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

68211712038390 is a wasteful number, since it uses less digits than its factorization.

68211712038390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 818117.

The product of its (nonzero) digits is 870912, while the sum is 51.

The spelling of 68211712038390 in words is "sixty-eight trillion, two hundred eleven billion, seven hundred twelve million, thirty-eight thousand, three hundred ninety".