20413205346463 has 2 divisors, whose sum is σ = 20413205346464. Its totient is φ = 20413205346462.

The previous prime is 20413205346431. The next prime is 20413205346557. The reversal of 20413205346463 is 36464350231402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20413205346463 - 2⁵ = 20413205346431 is a prime.

It is a super-2 number, since 2×20413205346463² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20413205346563) 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 as a sum of consecutive naturals, namely, 10206602673231 + 10206602673232.

It is an arithmetic number, because the mean of its divisors is an integer number (10206602673232).

Almost surely, 2^{20413205346463} is an apocalyptic number.

20413205346463 is a deficient number, since it is larger than the sum of its proper divisors (1).

20413205346463 is an equidigital number, since it uses as much as digits as its factorization.

20413205346463 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1244160, while the sum is 43.

Adding to 20413205346463 its reverse (36464350231402), we get a palindrome (56877555577865).

The spelling of 20413205346463 in words is "twenty trillion, four hundred thirteen billion, two hundred five million, three hundred forty-six thousand, four hundred sixty-three".