6404544452 has 24 divisors (see below), whose sum is σ = 11699589720. Its totient is φ = 3064642560.

The previous prime is 6404544389. The next prime is 6404544467. The reversal of 6404544452 is 2544454046.

It can be written as a sum of positive squares in 4 ways, for example, as 40653376 + 6363891076 = 6376^2 + 79774^2 .

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, 345677 + ... + 363732.

It is an arithmetic number, because the mean of its divisors is an integer number (487482905).

Almost surely, 2^6404544452 is an apocalyptic number.

It is an amenable number.

6404544452 is a deficient number, since it is larger than the sum of its proper divisors (5295045268).

6404544452 is a wasteful number, since it uses less digits than its factorization.

6404544452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 709511 (or 709509 counting only the distinct ones).

The product of its (nonzero) digits is 307200, while the sum is 38.

The square root of 6404544452 is about 80028.3977847864. The cubic root of 6404544452 is about 1857.0748769244.

Adding to 6404544452 its reverse (2544454046), we get a palindrome (8948998498).

The spelling of 6404544452 in words is "six billion, four hundred four million, five hundred forty-four thousand, four hundred fifty-two".