68252387808721 has 8 divisors (see below), whose sum is σ = 68302750751424. Its totient is φ = 68202043026480.

The previous prime is 68252387808677. The next prime is 68252387808727. The reversal of 68252387808721 is 12780878325286.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68252387808721 - 2¹⁵ = 68252387775953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68252387808727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2983846 + ... + 12058528.

It is an arithmetic number, because the mean of its divisors is an integer number (8537843843928).

Almost surely, 2^{68252387808721} is an apocalyptic number.

It is an amenable number.

68252387808721 is a deficient number, since it is larger than the sum of its proper divisors (50362942703).

68252387808721 is a wasteful number, since it uses less digits than its factorization.

68252387808721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9080231.

The product of its (nonzero) digits is 144506880, while the sum is 67.

The spelling of 68252387808721 in words is "sixty-eight trillion, two hundred fifty-two billion, three hundred eighty-seven million, eight hundred eight thousand, seven hundred twenty-one".