68091167437 has 2 divisors, whose sum is σ = 68091167438. Its totient is φ = 68091167436.

The previous prime is 68091167387. The next prime is 68091167461. The reversal of 68091167437 is 73476119086.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52383307876 + 15707859561 = 228874^2 + 125331^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68091167437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68091164437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34045583718 + 34045583719.

It is an arithmetic number, because the mean of its divisors is an integer number (34045583719).

Almost surely, 2^68091167437 is an apocalyptic number.

It is an amenable number.

68091167437 is a deficient number, since it is larger than the sum of its proper divisors (1).

68091167437 is an equidigital number, since it uses as much as digits as its factorization.

68091167437 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1524096, while the sum is 52.

The spelling of 68091167437 in words is "sixty-eight billion, ninety-one million, one hundred sixty-seven thousand, four hundred thirty-seven".