20344311424 has 16 divisors (see below), whose sum is σ = 40529683170. Its totient is φ = 10172155648.

The previous prime is 20344311401. The next prime is 20344311433. The reversal of 20344311424 is 42411344302.

It can be written as a sum of positive squares in only one way, i.e., 19108085824 + 1236225600 = 138232^2 + 35160^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a junction number, because it is equal to n+sod(n) for n = 20344311392 and 20344311401.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79469839 + ... + 79470094.

Almost surely, 2^20344311424 is an apocalyptic number.

It is an amenable number.

20344311424 is a deficient number, since it is larger than the sum of its proper divisors (20185371746).

20344311424 is an equidigital number, since it uses as much as digits as its factorization.

20344311424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158939947 (or 158939935 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 20344311424 its reverse (42411344302), we get a palindrome (62755655726).

The spelling of 20344311424 in words is "twenty billion, three hundred forty-four million, three hundred eleven thousand, four hundred twenty-four".