21030162235504 has 40 divisors (see below), whose sum is σ = 41128135340688. Its totient is φ = 10416728125440.

The previous prime is 21030162235501. The next prime is 21030162235507. The reversal of 21030162235504 is 40553226103012.

It is an interprime number because it is at equal distance from previous prime (21030162235501) and next prime (21030162235507).

It is a self number, because there is not a number n which added to its sum of digits gives 21030162235504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21030162235501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7485127 + ... + 9903910.

Almost surely, 2^{21030162235504} is an apocalyptic number.

It is an amenable number.

21030162235504 is a deficient number, since it is larger than the sum of its proper divisors (20097973105184).

21030162235504 is a wasteful number, since it uses less digits than its factorization.

21030162235504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17389753 (or 17389747 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 34.

Adding to 21030162235504 its reverse (40553226103012), we get a palindrome (61583388338516).

The spelling of 21030162235504 in words is "twenty-one trillion, thirty billion, one hundred sixty-two million, two hundred thirty-five thousand, five hundred four".