68746741537 has 2 divisors, whose sum is σ = 68746741538. Its totient is φ = 68746741536.

The previous prime is 68746741501. The next prime is 68746741589. The reversal of 68746741537 is 73514764786.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65098460736 + 3648280801 = 255144^2 + 60401^2 .

It is a cyclic number.

It is not a de Polignac number, because 68746741537 - 2⁷ = 68746741409 is a prime.

It is a super-3 number, since 3×68746741537³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (68746741237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34373370768 + 34373370769.

It is an arithmetic number, because the mean of its divisors is an integer number (34373370769).

Almost surely, 2^68746741537 is an apocalyptic number.

It is an amenable number.

68746741537 is a deficient number, since it is larger than the sum of its proper divisors (1).

68746741537 is an equidigital number, since it uses as much as digits as its factorization.

68746741537 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23708160, while the sum is 58.

The spelling of 68746741537 in words is "sixty-eight billion, seven hundred forty-six million, seven hundred forty-one thousand, five hundred thirty-seven".