20395852913 has 2 divisors, whose sum is σ = 20395852914. Its totient is φ = 20395852912.

The previous prime is 20395852871. The next prime is 20395852963. The reversal of 20395852913 is 31925859302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18024942049 + 2370910864 = 134257^2 + 48692^2 .

It is a cyclic number.

It is not a de Polignac number, because 20395852913 - 2¹⁴ = 20395836529 is a prime.

It is not a weakly prime, because it can be changed into another prime (20395852963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10197926456 + 10197926457.

It is an arithmetic number, because the mean of its divisors is an integer number (10197926457).

Almost surely, 2^20395852913 is an apocalyptic number.

It is an amenable number.

20395852913 is a deficient number, since it is larger than the sum of its proper divisors (1).

20395852913 is an equidigital number, since it uses as much as digits as its factorization.

20395852913 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 583200, while the sum is 47.

The spelling of 20395852913 in words is "twenty billion, three hundred ninety-five million, eight hundred fifty-two thousand, nine hundred thirteen".