20424040144 has 40 divisors (see below), whose sum is σ = 40585473792. Its totient is φ = 9952924800.

The previous prime is 20424040123. The next prime is 20424040151. The reversal of 20424040144 is 44104042402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48297 + ... + 207799.

Almost surely, 2^20424040144 is an apocalyptic number.

It is an amenable number.

20424040144 is a deficient number, since it is larger than the sum of its proper divisors (20161433648).

20424040144 is a wasteful number, since it uses less digits than its factorization.

20424040144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159715 (or 159709 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 25.

Adding to 20424040144 its reverse (44104042402), we get a palindrome (64528082546).

The spelling of 20424040144 in words is "twenty billion, four hundred twenty-four million, forty thousand, one hundred forty-four".