20154001444 has 12 divisors (see below), whose sum is σ = 36089723824. Its totient is φ = 9842651784.

The previous prime is 20154001433. The next prime is 20154001447. The reversal of 20154001444 is 44410045102.

It is not an unprimeable number, because it can be changed into a prime (20154001447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58587042 + ... + 58587385.

Almost surely, 2^20154001444 is an apocalyptic number.

It is an amenable number.

20154001444 is a deficient number, since it is larger than the sum of its proper divisors (15935722380).

20154001444 is a wasteful number, since it uses less digits than its factorization.

20154001444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117174474 (or 117174472 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 25.

Adding to 20154001444 its reverse (44410045102), we get a palindrome (64564046546).

The spelling of 20154001444 in words is "twenty billion, one hundred fifty-four million, one thousand, four hundred forty-four".