20144203508 has 24 divisors (see below), whose sum is σ = 41415356640. Its totient is φ = 8452113120.

The previous prime is 20144203487. The next prime is 20144203511. The reversal of 20144203508 is 80530244102.

It is a happy number.

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, 17607998 + ... + 17609141.

It is an arithmetic number, because the mean of its divisors is an integer number (1725639860).

Almost surely, 2^20144203508 is an apocalyptic number.

It is an amenable number.

20144203508 is an abundant number, since it is smaller than the sum of its proper divisors (21271153132).

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

20144203508 is a wasteful number, since it uses less digits than its factorization.

20144203508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35217167 (or 35217165 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 29.

The spelling of 20144203508 in words is "twenty billion, one hundred forty-four million, two hundred three thousand, five hundred eight".