2685723349237 has 2 divisors, whose sum is σ = 2685723349238. Its totient is φ = 2685723349236.

The previous prime is 2685723349207. The next prime is 2685723349297. The reversal of 2685723349237 is 7329433275862.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2381740937521 + 303982411716 = 1543289^2 + 551346^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2685723349237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2685723349207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1342861674618 + 1342861674619.

It is an arithmetic number, because the mean of its divisors is an integer number (1342861674619).

Almost surely, 2^{2685723349237} is an apocalyptic number.

It is an amenable number.

2685723349237 is a deficient number, since it is larger than the sum of its proper divisors (1).

2685723349237 is an equidigital number, since it uses as much as digits as its factorization.

2685723349237 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 91445760, while the sum is 61.

The spelling of 2685723349237 in words is "two trillion, six hundred eighty-five billion, seven hundred twenty-three million, three hundred forty-nine thousand, two hundred thirty-seven".