2001404520305 has 8 divisors (see below), whose sum is σ = 2542961037672. Its totient is φ = 1506939874048.

The previous prime is 2001404520287. The next prime is 2001404520337. The reversal of 2001404520305 is 5030254041002.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 268556114176 + 1732848406129 = 518224^2 + 1316377^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2001404520305 - 2²⁶ = 2001337411441 is a prime.

It is a Duffinian number.

It is a Curzon 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, 11772967682 + ... + 11772967851.

It is an arithmetic number, because the mean of its divisors is an integer number (317870129709).

Almost surely, 2^{2001404520305} is an apocalyptic number.

It is an amenable number.

2001404520305 is a deficient number, since it is larger than the sum of its proper divisors (541556517367).

2001404520305 is a wasteful number, since it uses less digits than its factorization.

2001404520305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23545935555.

The product of its (nonzero) digits is 4800, while the sum is 26.

Adding to 2001404520305 its reverse (5030254041002), we get a palindrome (7031658561307).

The spelling of 2001404520305 in words is "two trillion, one billion, four hundred four million, five hundred twenty thousand, three hundred five".