20053958317 has 2 divisors, whose sum is σ = 20053958318. Its totient is φ = 20053958316.

The previous prime is 20053958303. The next prime is 20053958333. The reversal of 20053958317 is 71385935002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17969670601 + 2084287716 = 134051^2 + 45654^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20053958317 is a prime.

It is a super-2 number, since 2×20053958317² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20053958357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10026979158 + 10026979159.

It is an arithmetic number, because the mean of its divisors is an integer number (10026979159).

Almost surely, 2^20053958317 is an apocalyptic number.

It is an amenable number.

20053958317 is a deficient number, since it is larger than the sum of its proper divisors (1).

20053958317 is an equidigital number, since it uses as much as digits as its factorization.

20053958317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 226800, while the sum is 43.

The spelling of 20053958317 in words is "twenty billion, fifty-three million, nine hundred fifty-eight thousand, three hundred seventeen".