68153686501 has 2 divisors, whose sum is σ = 68153686502. Its totient is φ = 68153686500.

The previous prime is 68153686481. The next prime is 68153686537. The reversal of 68153686501 is 10568635186.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57539535876 + 10614150625 = 239874^2 + 103025^2 .

It is a cyclic number.

It is not a de Polignac number, because 68153686501 - 2¹¹ = 68153684453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68153686541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34076843250 + 34076843251.

It is an arithmetic number, because the mean of its divisors is an integer number (34076843251).

Almost surely, 2^68153686501 is an apocalyptic number.

It is an amenable number.

68153686501 is a deficient number, since it is larger than the sum of its proper divisors (1).

68153686501 is an equidigital number, since it uses as much as digits as its factorization.

68153686501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1036800, while the sum is 49.

The spelling of 68153686501 in words is "sixty-eight billion, one hundred fifty-three million, six hundred eighty-six thousand, five hundred one".