68306146537 has 2 divisors, whose sum is σ = 68306146538. Its totient is φ = 68306146536.

The previous prime is 68306146487. The next prime is 68306146567. The reversal of 68306146537 is 73564160386.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67639525776 + 666620761 = 260076^2 + 25819^2 .

It is a cyclic number.

It is not a de Polignac number, because 68306146537 - 2⁷ = 68306146409 is a prime.

It is not a weakly prime, because it can be changed into another prime (68306146567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34153073268 + 34153073269.

It is an arithmetic number, because the mean of its divisors is an integer number (34153073269).

Almost surely, 2^68306146537 is an apocalyptic number.

It is an amenable number.

68306146537 is a deficient number, since it is larger than the sum of its proper divisors (1).

68306146537 is an equidigital number, since it uses as much as digits as its factorization.

68306146537 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2177280, while the sum is 49.

The spelling of 68306146537 in words is "sixty-eight billion, three hundred six million, one hundred forty-six thousand, five hundred thirty-seven".