6405452542472 has 16 divisors (see below), whose sum is σ = 12017725242300. Its totient is φ = 3200725811200.

The previous prime is 6405452542451. The next prime is 6405452542483. The reversal of 6405452542472 is 2742452545046.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 3828933178756 + 2576519363716 = 1956766^2 + 1605154^2 .

It is a super-2 number, since 2×6405452542472² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6405452542472.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 250043897 + ... + 250069512.

Almost surely, 2^{6405452542472} is an apocalyptic number.

It is an amenable number.

6405452542472 is a deficient number, since it is larger than the sum of its proper divisors (5612272699828).

6405452542472 is a wasteful number, since it uses less digits than its factorization.

6405452542472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500115016 (or 500115012 counting only the distinct ones).

The product of its (nonzero) digits is 10752000, while the sum is 50.

The spelling of 6405452542472 in words is "six trillion, four hundred five billion, four hundred fifty-two million, five hundred forty-two thousand, four hundred seventy-two".