20411204352503 has 32 divisors (see below), whose sum is σ = 22011165130752. Its totient is φ = 18859521600000.

The previous prime is 20411204352481. The next prime is 20411204352509. The reversal of 20411204352503 is 30525340211402.

It is a cyclic number.

It is not a de Polignac number, because 20411204352503 - 2³⁴ = 20394024483319 is a prime.

It is a super-2 number, since 2×20411204352503² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20411204352503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20411204352509) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 95999450 + ... + 96211832.

It is an arithmetic number, because the mean of its divisors is an integer number (687848910336).

Almost surely, 2^{20411204352503} is an apocalyptic number.

20411204352503 is a deficient number, since it is larger than the sum of its proper divisors (1599960778249).

20411204352503 is a wasteful number, since it uses less digits than its factorization.

20411204352503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212975.

The product of its (nonzero) digits is 28800, while the sum is 32.

Adding to 20411204352503 its reverse (30525340211402), we get a palindrome (50936544563905).

The spelling of 20411204352503 in words is "twenty trillion, four hundred eleven billion, two hundred four million, three hundred fifty-two thousand, five hundred three".