23420454543320 has 128 divisors (see below), whose sum is σ = 55864028160000. Its totient is φ = 8812042283520.

The previous prime is 23420454543307. The next prime is 23420454543349. The reversal of 23420454543320 is 2334545402432.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 293364929 + ... + 293444751.

It is an arithmetic number, because the mean of its divisors is an integer number (436437720000).

Almost surely, 2^{23420454543320} is an apocalyptic number.

23420454543320 is a gapful number since it is divisible by the number (20) 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 23420454543320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27932014080000).

23420454543320 is an abundant number, since it is smaller than the sum of its proper divisors (32443573616680).

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

23420454543320 is a wasteful number, since it uses less digits than its factorization.

23420454543320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82593 (or 82589 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 41.

Adding to 23420454543320 its reverse (2334545402432), we get a palindrome (25754999945752).

The spelling of 23420454543320 in words is "twenty-three trillion, four hundred twenty billion, four hundred fifty-four million, five hundred forty-three thousand, three hundred twenty".