68915931737 has 2 divisors, whose sum is σ = 68915931738. Its totient is φ = 68915931736.

The previous prime is 68915931677. The next prime is 68915931893. The reversal of 68915931737 is 73713951986.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67192934656 + 1722997081 = 259216^2 + 41509^2 .

It is a cyclic number.

It is not a de Polignac number, because 68915931737 - 2¹⁴ = 68915915353 is a prime.

It is not a weakly prime, because it can be changed into another prime (68915931037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34457965868 + 34457965869.

It is an arithmetic number, because the mean of its divisors is an integer number (34457965869).

Almost surely, 2^68915931737 is an apocalyptic number.

It is an amenable number.

68915931737 is a deficient number, since it is larger than the sum of its proper divisors (1).

68915931737 is an equidigital number, since it uses as much as digits as its factorization.

68915931737 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8573040, while the sum is 59.

The spelling of 68915931737 in words is "sixty-eight billion, nine hundred fifteen million, nine hundred thirty-one thousand, seven hundred thirty-seven".