20413216453500 has 144 divisors (see below), whose sum is σ = 69350500896768. Its totient is φ = 5024791728000.

The previous prime is 20413216453481. The next prime is 20413216453501. The reversal of 20413216453500 is 535461231402.

20413216453500 is a `hidden beast` number, since 2 + 0 + 4 + 1 + 3 + 2 + 1 + 645 + 3 + 5 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20413216453501) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 174413436 + ... + 174530435.

It is an arithmetic number, because the mean of its divisors is an integer number (481600700672).

Almost surely, 2^{20413216453500} is an apocalyptic number.

20413216453500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20413216453500 is an abundant number, since it is smaller than the sum of its proper divisors (48937284443268).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20413216453500 is a wasteful number, since it uses less digits than its factorization.

20413216453500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348943909 (or 348943894 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

Adding to 20413216453500 its reverse (535461231402), we get a palindrome (20948677684902).

The spelling of 20413216453500 in words is "twenty trillion, four hundred thirteen billion, two hundred sixteen million, four hundred fifty-three thousand, five hundred".