6405545469 has 16 divisors (see below), whose sum is σ = 8915304960. Its totient is φ = 4086170880.

The previous prime is 6405545441. The next prime is 6405545533. The reversal of 6405545469 is 9645455046.

It is not a de Polignac number, because 6405545469 - 2¹⁷ = 6405414397 is a prime.

It is a super-2 number, since 2×6405545469² = 82062025510852859922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6405545269) 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, 378672 + ... + 395225.

It is an arithmetic number, because the mean of its divisors is an integer number (557206560).

Almost surely, 2^6405545469 is an apocalyptic number.

It is an amenable number.

6405545469 is a deficient number, since it is larger than the sum of its proper divisors (2509759491).

6405545469 is a wasteful number, since it uses less digits than its factorization.

6405545469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 774020.

The product of its (nonzero) digits is 2592000, while the sum is 48.

The square root of 6405545469 is about 80034.6516766332. The cubic root of 6405545469 is about 1857.1716241999.

The spelling of 6405545469 in words is "six billion, four hundred five million, five hundred forty-five thousand, four hundred sixty-nine".