20411419991 has 2 divisors, whose sum is σ = 20411419992. Its totient is φ = 20411419990.

The previous prime is 20411419969. The next prime is 20411420021. The reversal of 20411419991 is 19991411402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20411419991 - 2¹⁸ = 20411157847 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20411419591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10205709995 + 10205709996.

It is an arithmetic number, because the mean of its divisors is an integer number (10205709996).

Almost surely, 2^20411419991 is an apocalyptic number.

20411419991 is a deficient number, since it is larger than the sum of its proper divisors (1).

20411419991 is an equidigital number, since it uses as much as digits as its factorization.

20411419991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 41.

The spelling of 20411419991 in words is "twenty billion, four hundred eleven million, four hundred nineteen thousand, nine hundred ninety-one".