20105411420997 has 24 divisors (see below), whose sum is σ = 33999394927680. Its totient is φ = 11208591731520.

The previous prime is 20105411420977. The next prime is 20105411421023. The reversal of 20105411420997 is 79902411450102.

20105411420997 is a `hidden beast` number, since 2 + 0 + 1 + 0 + 541 + 14 + 2 + 0 + 9 + 97 = 666.

It is not a de Polignac number, because 20105411420997 - 2⁶ = 20105411420933 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20105411420917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3891869547 + ... + 3891874712.

It is an arithmetic number, because the mean of its divisors is an integer number (1416641455320).

Almost surely, 2^{20105411420997} is an apocalyptic number.

It is an amenable number.

20105411420997 is a deficient number, since it is larger than the sum of its proper divisors (13893983506683).

20105411420997 is a wasteful number, since it uses less digits than its factorization.

20105411420997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7783744313 (or 7783744310 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 45.

The spelling of 20105411420997 in words is "twenty trillion, one hundred five billion, four hundred eleven million, four hundred twenty thousand, nine hundred ninety-seven".