68734157593 has 2 divisors, whose sum is σ = 68734157594. Its totient is φ = 68734157592.

The previous prime is 68734157573. The next prime is 68734157599. The reversal of 68734157593 is 39575143786.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68734157584 + 9 = 262172^2 + 3^2 .

It is a cyclic number.

It is not a de Polignac number, because 68734157593 - 2⁹ = 68734157081 is a prime.

It is not a weakly prime, because it can be changed into another prime (68734157599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34367078796 + 34367078797.

It is an arithmetic number, because the mean of its divisors is an integer number (34367078797).

Almost surely, 2^68734157593 is an apocalyptic number.

It is an amenable number.

68734157593 is a deficient number, since it is larger than the sum of its proper divisors (1).

68734157593 is an equidigital number, since it uses as much as digits as its factorization.

68734157593 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19051200, while the sum is 58.

The spelling of 68734157593 in words is "sixty-eight billion, seven hundred thirty-four million, one hundred fifty-seven thousand, five hundred ninety-three".