68619653017 has 2 divisors, whose sum is σ = 68619653018. Its totient is φ = 68619653016.

The previous prime is 68619652973. The next prime is 68619653059. The reversal of 68619653017 is 71035691686.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60232939776 + 8386713241 = 245424^2 + 91579^2 .

It is a cyclic number.

It is not a de Polignac number, because 68619653017 - 2⁷ = 68619652889 is a prime.

It is not a weakly prime, because it can be changed into another prime (68619653617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34309826508 + 34309826509.

It is an arithmetic number, because the mean of its divisors is an integer number (34309826509).

Almost surely, 2^68619653017 is an apocalyptic number.

It is an amenable number.

68619653017 is a deficient number, since it is larger than the sum of its proper divisors (1).

68619653017 is an equidigital number, since it uses as much as digits as its factorization.

68619653017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1632960, while the sum is 52.

The spelling of 68619653017 in words is "sixty-eight billion, six hundred nineteen million, six hundred fifty-three thousand, seventeen".