20453320410 has 128 divisors (see below), whose sum is σ = 51170918400. Its totient is φ = 5228720640.

The previous prime is 20453320367. The next prime is 20453320439. The reversal of 20453320410 is 1402335402.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 15482550 + ... + 15483870.

It is an arithmetic number, because the mean of its divisors is an integer number (399772800).

Almost surely, 2^20453320410 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20453320410, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25585459200).

20453320410 is an abundant number, since it is smaller than the sum of its proper divisors (30717597990).

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

20453320410 is a wasteful number, since it uses less digits than its factorization.

20453320410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1596.

The product of its (nonzero) digits is 2880, while the sum is 24.

Adding to 20453320410 its reverse (1402335402), we get a palindrome (21855655812).

The spelling of 20453320410 in words is "twenty billion, four hundred fifty-three million, three hundred twenty thousand, four hundred ten".