68450850868651 has 2 divisors, whose sum is σ = 68450850868652. Its totient is φ = 68450850868650.

The previous prime is 68450850868639. The next prime is 68450850868721. The reversal of 68450850868651 is 15686805805486.

It is an a-pointer prime, because the next prime (68450850868721) can be obtained adding 68450850868651 to its sum of digits (70).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68450850868651 - 2²³ = 68450842480043 is a prime.

It is a super-2 number, since 2×68450850868651² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (68450850968651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34225425434325 + 34225425434326.

It is an arithmetic number, because the mean of its divisors is an integer number (34225425434326).

Almost surely, 2^{68450850868651} is an apocalyptic number.

68450850868651 is a deficient number, since it is larger than the sum of its proper divisors (1).

68450850868651 is an equidigital number, since it uses as much as digits as its factorization.

68450850868651 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 442368000, while the sum is 70.

The spelling of 68450850868651 in words is "sixty-eight trillion, four hundred fifty billion, eight hundred fifty million, eight hundred sixty-eight thousand, six hundred fifty-one".