20351588873047 has 2 divisors, whose sum is σ = 20351588873048. Its totient is φ = 20351588873046.

The previous prime is 20351588873017. The next prime is 20351588873131. The reversal of 20351588873047 is 74037888515302.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20351588873047 - 2⁷ = 20351588872919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20351588873017) 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, 10175794436523 + 10175794436524.

It is an arithmetic number, because the mean of its divisors is an integer number (10175794436524).

Almost surely, 2^{20351588873047} is an apocalyptic number.

20351588873047 is a deficient number, since it is larger than the sum of its proper divisors (1).

20351588873047 is an equidigital number, since it uses as much as digits as its factorization.

20351588873047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45158400, while the sum is 61.

The spelling of 20351588873047 in words is "twenty trillion, three hundred fifty-one billion, five hundred eighty-eight million, eight hundred seventy-three thousand, forty-seven".