68579299937 has 2 divisors, whose sum is σ = 68579299938. Its totient is φ = 68579299936.

The previous prime is 68579299909. The next prime is 68579299951. The reversal of 68579299937 is 73999297586.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66362396881 + 2216903056 = 257609^2 + 47084^2 .

It is a cyclic number.

It is not a de Polignac number, because 68579299937 - 2¹⁰ = 68579298913 is a prime.

It is not a weakly prime, because it can be changed into another prime (68579299037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34289649968 + 34289649969.

It is an arithmetic number, because the mean of its divisors is an integer number (34289649969).

Almost surely, 2^68579299937 is an apocalyptic number.

It is an amenable number.

68579299937 is a deficient number, since it is larger than the sum of its proper divisors (1).

68579299937 is an equidigital number, since it uses as much as digits as its factorization.

68579299937 is an evil number, because the sum of its binary digits is even.

The product of its digits is 462944160, while the sum is 74.

The spelling of 68579299937 in words is "sixty-eight billion, five hundred seventy-nine million, two hundred ninety-nine thousand, nine hundred thirty-seven".