20201867992393 has 2 divisors, whose sum is σ = 20201867992394. Its totient is φ = 20201867992392.

The previous prime is 20201867992387. The next prime is 20201867992531. The reversal of 20201867992393 is 39329976810202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14689458978489 + 5512409013904 = 3832683^2 + 2347852^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20201867992393 is a prime.

It is not a weakly prime, because it can be changed into another prime (20201867996393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10100933996196 + 10100933996197.

It is an arithmetic number, because the mean of its divisors is an integer number (10100933996197).

Almost surely, 2^{20201867992393} is an apocalyptic number.

It is an amenable number.

20201867992393 is a deficient number, since it is larger than the sum of its proper divisors (1).

20201867992393 is an equidigital number, since it uses as much as digits as its factorization.

20201867992393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17635968, while the sum is 61.

The spelling of 20201867992393 in words is "twenty trillion, two hundred one billion, eight hundred sixty-seven million, nine hundred ninety-two thousand, three hundred ninety-three".