20413210061551 has 2 divisors, whose sum is σ = 20413210061552. Its totient is φ = 20413210061550.

The previous prime is 20413210061527. The next prime is 20413210061581. The reversal of 20413210061551 is 15516001231402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20413210061551 - 2¹⁷ = 20413209930479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20413210061581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10206605030775 + 10206605030776.

It is an arithmetic number, because the mean of its divisors is an integer number (10206605030776).

Almost surely, 2^{20413210061551} is an apocalyptic number.

20413210061551 is a deficient number, since it is larger than the sum of its proper divisors (1).

20413210061551 is an equidigital number, since it uses as much as digits as its factorization.

20413210061551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7200, while the sum is 31.

Adding to 20413210061551 its reverse (15516001231402), we get a palindrome (35929211292953).

The spelling of 20413210061551 in words is "twenty trillion, four hundred thirteen billion, two hundred ten million, sixty-one thousand, five hundred fifty-one".