2005404987599 has 16 divisors (see below), whose sum is σ = 2209991828352. Its totient is φ = 1808011322208.

The previous prime is 2005404987517. The next prime is 2005404987671. The reversal of 2005404987599 is 9957894045002.

It is not a de Polignac number, because 2005404987599 - 2¹² = 2005404983503 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2005401987599) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14659892 + ... + 14796054.

It is an arithmetic number, because the mean of its divisors is an integer number (138124489272).

Almost surely, 2^{2005404987599} is an apocalyptic number.

2005404987599 is a deficient number, since it is larger than the sum of its proper divisors (204586840753).

2005404987599 is a wasteful number, since it uses less digits than its factorization.

2005404987599 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162566.

The product of its (nonzero) digits is 32659200, while the sum is 62.

The spelling of 2005404987599 in words is "two trillion, five billion, four hundred four million, nine hundred eighty-seven thousand, five hundred ninety-nine".