20355103263091 has 2 divisors, whose sum is σ = 20355103263092. Its totient is φ = 20355103263090.

The previous prime is 20355103263013. The next prime is 20355103263151. The reversal of 20355103263091 is 19036230155302.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20355103263091 - 2²¹ = 20355101165939 is a prime.

It is not a weakly prime, because it can be changed into another prime (20355103263191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10177551631545 + 10177551631546.

It is an arithmetic number, because the mean of its divisors is an integer number (10177551631546).

Almost surely, 2^{20355103263091} is an apocalyptic number.

20355103263091 is a deficient number, since it is larger than the sum of its proper divisors (1).

20355103263091 is an equidigital number, since it uses as much as digits as its factorization.

20355103263091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145800, while the sum is 40.

The spelling of 20355103263091 in words is "twenty trillion, three hundred fifty-five billion, one hundred three million, two hundred sixty-three thousand, ninety-one".