20355000217763 has 2 divisors, whose sum is σ = 20355000217764. Its totient is φ = 20355000217762.

The previous prime is 20355000217729. The next prime is 20355000217817. The reversal of 20355000217763 is 36771200055302.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20355000217763 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20355000217763.

It is not a weakly prime, because it can be changed into another prime (20355000217963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10177500108881 + 10177500108882.

It is an arithmetic number, because the mean of its divisors is an integer number (10177500108882).

Almost surely, 2^{20355000217763} is an apocalyptic number.

20355000217763 is a deficient number, since it is larger than the sum of its proper divisors (1).

20355000217763 is an equidigital number, since it uses as much as digits as its factorization.

20355000217763 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 264600, while the sum is 41.

The spelling of 20355000217763 in words is "twenty trillion, three hundred fifty-five billion, two hundred seventeen thousand, seven hundred sixty-three".