63421363505 has 32 divisors (see below), whose sum is σ = 78173061120. Its totient is φ = 49380408000.

The previous prime is 63421363483. The next prime is 63421363517. The reversal of 63421363505 is 50536312436.

It is not a de Polignac number, because 63421363505 - 2⁸ = 63421363249 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10675826 + ... + 10681764.

It is an arithmetic number, because the mean of its divisors is an integer number (2442908160).

Almost surely, 2^63421363505 is an apocalyptic number.

It is an amenable number.

63421363505 is a deficient number, since it is larger than the sum of its proper divisors (14751697615).

63421363505 is a wasteful number, since it uses less digits than its factorization.

63421363505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6389.

The product of its (nonzero) digits is 194400, while the sum is 38.

The spelling of 63421363505 in words is "sixty-three billion, four hundred twenty-one million, three hundred sixty-three thousand, five hundred five".