20353335377 has 2 divisors, whose sum is σ = 20353335378. Its totient is φ = 20353335376.

The previous prime is 20353335313. The next prime is 20353335419. The reversal of 20353335377 is 77353335302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18473159056 + 1880176321 = 135916^2 + 43361^2 .

It is a cyclic number.

It is not a de Polignac number, because 20353335377 - 2⁶ = 20353335313 is a prime.

It is not a weakly prime, because it can be changed into another prime (20353335307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10176667688 + 10176667689.

It is an arithmetic number, because the mean of its divisors is an integer number (10176667689).

Almost surely, 2^20353335377 is an apocalyptic number.

It is an amenable number.

20353335377 is a deficient number, since it is larger than the sum of its proper divisors (1).

20353335377 is an equidigital number, since it uses as much as digits as its factorization.

20353335377 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 595350, while the sum is 41.

The spelling of 20353335377 in words is "twenty billion, three hundred fifty-three million, three hundred thirty-five thousand, three hundred seventy-seven".