20001404344 has 8 divisors (see below), whose sum is σ = 37502633160. Its totient is φ = 10000702168.

The previous prime is 20001404323. The next prime is 20001404351. The reversal of 20001404344 is 44340410002.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1250087764 + ... + 1250087779.

It is an arithmetic number, because the mean of its divisors is an integer number (4687829145).

Almost surely, 2^20001404344 is an apocalyptic number.

It is an amenable number.

20001404344 is a deficient number, since it is larger than the sum of its proper divisors (17501228816).

20001404344 is a wasteful number, since it uses less digits than its factorization.

20001404344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2500175549 (or 2500175545 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 20001404344 its reverse (44340410002), we get a palindrome (64341814346).

The spelling of 20001404344 in words is "twenty billion, one million, four hundred four thousand, three hundred forty-four".