421567744603 has 16 divisors (see below), whose sum is σ = 429175834560. Its totient is φ = 414010773504.

The previous prime is 421567744601. The next prime is 421567744639. The reversal of 421567744603 is 306447765124.

It is a cyclic number.

It is not a de Polignac number, because 421567744603 - 2¹ = 421567744601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421567744601) 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 in 15 ways as a sum of consecutive naturals, for example, 53542075 + ... + 53549947.

It is an arithmetic number, because the mean of its divisors is an integer number (26823489660).

Almost surely, 2^421567744603 is an apocalyptic number.

421567744603 is a deficient number, since it is larger than the sum of its proper divisors (7608089957).

421567744603 is a wasteful number, since it uses less digits than its factorization.

421567744603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10998.

The product of its (nonzero) digits is 3386880, while the sum is 49.

The spelling of 421567744603 in words is "four hundred twenty-one billion, five hundred sixty-seven million, seven hundred forty-four thousand, six hundred three".