16204453620 has 96 divisors (see below), whose sum is σ = 47833726080. Its totient is φ = 4087480320.

The previous prime is 16204453613. The next prime is 16204453633. The reversal of 16204453620 is 2635440261.

It is a super-2 number, since 2×16204453620² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 756660 + ... + 777780.

It is an arithmetic number, because the mean of its divisors is an integer number (498267980).

Almost surely, 2^16204453620 is an apocalyptic number.

16204453620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16204453620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23916863040).

16204453620 is an abundant number, since it is smaller than the sum of its proper divisors (31629272460).

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

16204453620 is a wasteful number, since it uses less digits than its factorization.

16204453620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21825 (or 21823 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 33.

Adding to 16204453620 its reverse (2635440261), we get a palindrome (18839893881).

The spelling of 16204453620 in words is "sixteen billion, two hundred four million, four hundred fifty-three thousand, six hundred twenty".