424821884869 has 2 divisors, whose sum is σ = 424821884870. Its totient is φ = 424821884868.

The previous prime is 424821884821. The next prime is 424821884899. The reversal of 424821884869 is 968488128424.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 402780622500 + 22041262369 = 634650^2 + 148463^2 .

It is a cyclic number.

It is not a de Polignac number, because 424821884869 - 2³⁷ = 287382931397 is a prime.

It is a super-2 number, since 2×424821884869² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 424821884869.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (424821884899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212410942434 + 212410942435.

It is an arithmetic number, because the mean of its divisors is an integer number (212410942435).

Almost surely, 2^424821884869 is an apocalyptic number.

It is an amenable number.

424821884869 is a deficient number, since it is larger than the sum of its proper divisors (1).

424821884869 is an equidigital number, since it uses as much as digits as its factorization.

424821884869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 56623104, while the sum is 64.

The spelling of 424821884869 in words is "four hundred twenty-four billion, eight hundred twenty-one million, eight hundred eighty-four thousand, eight hundred sixty-nine".