68611796069 has 2 divisors, whose sum is σ = 68611796070. Its totient is φ = 68611796068.

The previous prime is 68611796063. The next prime is 68611796107. The reversal of 68611796069 is 96069711686.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36581535169 + 32030260900 = 191263^2 + 178970^2 .

It is a cyclic number.

It is not a de Polignac number, because 68611796069 - 2⁴ = 68611796053 is a prime.

It is a super-2 number, since 2×68611796069² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 68611795999 and 68611796017.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68611796063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34305898034 + 34305898035.

It is an arithmetic number, because the mean of its divisors is an integer number (34305898035).

Almost surely, 2^68611796069 is an apocalyptic number.

It is an amenable number.

68611796069 is a deficient number, since it is larger than the sum of its proper divisors (1).

68611796069 is an equidigital number, since it uses as much as digits as its factorization.

68611796069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5878656, while the sum is 59.

The spelling of 68611796069 in words is "sixty-eight billion, six hundred eleven million, seven hundred ninety-six thousand, sixty-nine".