20144003985 has 48 divisors (see below), whose sum is σ = 39937497600. Its totient is φ = 9201029760.

The previous prime is 20144003977. The next prime is 20144004019. The reversal of 20144003985 is 58930044102.

20144003985 is a `hidden beast` number, since 201 + 440 + 0 + 3 + 9 + 8 + 5 = 666.

It is not a de Polignac number, because 20144003985 - 2³ = 20144003977 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 361791 + ... + 413739.

It is an arithmetic number, because the mean of its divisors is an integer number (832031200).

Almost surely, 2^20144003985 is an apocalyptic number.

It is an amenable number.

20144003985 is a deficient number, since it is larger than the sum of its proper divisors (19793493615).

20144003985 is a wasteful number, since it uses less digits than its factorization.

20144003985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53198 (or 53195 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The spelling of 20144003985 in words is "twenty billion, one hundred forty-four million, three thousand, nine hundred eighty-five".