68820495353 has 2 divisors, whose sum is σ = 68820495354. Its totient is φ = 68820495352.

The previous prime is 68820495313. The next prime is 68820495407. The reversal of 68820495353 is 35359402886.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48115299904 + 20705195449 = 219352^2 + 143893^2 .

It is a cyclic number.

It is not a de Polignac number, because 68820495353 - 2²⁶ = 68753386489 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 68820495295 and 68820495304.

It is not a weakly prime, because it can be changed into another prime (68820495313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34410247676 + 34410247677.

It is an arithmetic number, because the mean of its divisors is an integer number (34410247677).

Almost surely, 2^68820495353 is an apocalyptic number.

It is an amenable number.

68820495353 is a deficient number, since it is larger than the sum of its proper divisors (1).

68820495353 is an equidigital number, since it uses as much as digits as its factorization.

68820495353 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6220800, while the sum is 53.

The spelling of 68820495353 in words is "sixty-eight billion, eight hundred twenty million, four hundred ninety-five thousand, three hundred fifty-three".