20420411144 has 16 divisors (see below), whose sum is σ = 43758024000. Its totient is φ = 8751604752.

The previous prime is 20420411113. The next prime is 20420411159. The reversal of 20420411144 is 44111402402.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 182325044 + ... + 182325155.

It is an arithmetic number, because the mean of its divisors is an integer number (2734876500).

Almost surely, 2^20420411144 is an apocalyptic number.

It is an amenable number.

20420411144 is an abundant number, since it is smaller than the sum of its proper divisors (23337612856).

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

20420411144 is a wasteful number, since it uses less digits than its factorization.

20420411144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364650212 (or 364650208 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 20420411144 its reverse (44111402402), we get a palindrome (64531813546).

The spelling of 20420411144 in words is "twenty billion, four hundred twenty million, four hundred eleven thousand, one hundred forty-four".