20412423223440 has 80 divisors (see below), whose sum is σ = 64169758694016. Its totient is φ = 5366646476800.

The previous prime is 20412423223421. The next prime is 20412423223457. The reversal of 20412423223440 is 4432232421402.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 598939041 + ... + 598973120.

Almost surely, 2^{20412423223440} is an apocalyptic number.

20412423223440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20412423223440 is an abundant number, since it is smaller than the sum of its proper divisors (43757335470576).

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

20412423223440 is a wasteful number, since it uses less digits than its factorization.

20412423223440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1197912248 (or 1197912242 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 33.

Adding to 20412423223440 its reverse (4432232421402), we get a palindrome (24844655644842).

The spelling of 20412423223440 in words is "twenty trillion, four hundred twelve billion, four hundred twenty-three million, two hundred twenty-three thousand, four hundred forty".