20354334445019 has 2 divisors, whose sum is σ = 20354334445020. Its totient is φ = 20354334445018.

The previous prime is 20354334444989. The next prime is 20354334445117. The reversal of 20354334445019 is 91054443345302.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20354334445019 is a prime.

It is a super-2 number, since 2×20354334445019² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20354339445019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10177167222509 + 10177167222510.

It is an arithmetic number, because the mean of its divisors is an integer number (10177167222510).

Almost surely, 2^{20354334445019} is an apocalyptic number.

20354334445019 is a deficient number, since it is larger than the sum of its proper divisors (1).

20354334445019 is an equidigital number, since it uses as much as digits as its factorization.

20354334445019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3110400, while the sum is 47.

The spelling of 20354334445019 in words is "twenty trillion, three hundred fifty-four billion, three hundred thirty-four million, four hundred forty-five thousand, nineteen".