42621164563 has 2 divisors, whose sum is σ = 42621164564. Its totient is φ = 42621164562.

The previous prime is 42621164497. The next prime is 42621164671. The reversal of 42621164563 is 36546112624.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42621164563 - 2¹³ = 42621156371 is a prime.

It is not a weakly prime, because it can be changed into another prime (42621165563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21310582281 + 21310582282.

It is an arithmetic number, because the mean of its divisors is an integer number (21310582282).

Almost surely, 2^42621164563 is an apocalyptic number.

42621164563 is a deficient number, since it is larger than the sum of its proper divisors (1).

42621164563 is an equidigital number, since it uses as much as digits as its factorization.

42621164563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 207360, while the sum is 40.

The spelling of 42621164563 in words is "forty-two billion, six hundred twenty-one million, one hundred sixty-four thousand, five hundred sixty-three".