420216162503 has 4 divisors (see below), whose sum is σ = 420324553320. Its totient is φ = 420107771688.

The previous prime is 420216162491. The next prime is 420216162523. The reversal of 420216162503 is 305261612024.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 420216162503 - 2⁶ = 420216162439 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 420216162503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420216162523) 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, 54189593 + ... + 54197346.

It is an arithmetic number, because the mean of its divisors is an integer number (105081138330).

Almost surely, 2^420216162503 is an apocalyptic number.

420216162503 is a deficient number, since it is larger than the sum of its proper divisors (108390817).

420216162503 is a wasteful number, since it uses less digits than its factorization.

420216162503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108390816.

The product of its (nonzero) digits is 17280, while the sum is 32.

Adding to 420216162503 its reverse (305261612024), we get a palindrome (725477774527).

The spelling of 420216162503 in words is "four hundred twenty billion, two hundred sixteen million, one hundred sixty-two thousand, five hundred three".