421503413489 has 4 divisors (see below), whose sum is σ = 421505740656. Its totient is φ = 421501086324.

The previous prime is 421503413459. The next prime is 421503413503. The reversal of 421503413489 is 984314305124.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 421503413489 - 2²⁸ = 421234978033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421503413459) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 866639 + ... + 1262564.

It is an arithmetic number, because the mean of its divisors is an integer number (105376435164).

Almost surely, 2^421503413489 is an apocalyptic number.

It is an amenable number.

421503413489 is a deficient number, since it is larger than the sum of its proper divisors (2327167).

421503413489 is a wasteful number, since it uses less digits than its factorization.

421503413489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2327166.

The product of its (nonzero) digits is 414720, while the sum is 44.

The spelling of 421503413489 in words is "four hundred twenty-one billion, five hundred three million, four hundred thirteen thousand, four hundred eighty-nine".