20145013144 has 32 divisors (see below), whose sum is σ = 38743966800. Its totient is φ = 9813934080.

The previous prime is 20145013139. The next prime is 20145013201. The reversal of 20145013144 is 44131054102.

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, 212299 + ... + 292165.

Almost surely, 2^20145013144 is an apocalyptic number.

It is an amenable number.

20145013144 is a deficient number, since it is larger than the sum of its proper divisors (18598953656).

20145013144 is a wasteful number, since it uses less digits than its factorization.

20145013144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80683 (or 80679 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 20145013144 its reverse (44131054102), we get a palindrome (64276067246).

The spelling of 20145013144 in words is "twenty billion, one hundred forty-five million, thirteen thousand, one hundred forty-four".