6436434455 has 32 divisors (see below), whose sum is σ = 8558984448. Its totient is φ = 4607366400.

The previous prime is 6436434443. The next prime is 6436434457. The reversal of 6436434455 is 5544346346.

It is not a de Polignac number, because 6436434455 - 2⁴ = 6436434439 is a prime.

It is a super-2 number, since 2×6436434455² = 82855376987022294050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6436434457) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2355440 + ... + 2358170.

It is an arithmetic number, because the mean of its divisors is an integer number (267468264).

Almost surely, 2^6436434455 is an apocalyptic number.

6436434455 is a deficient number, since it is larger than the sum of its proper divisors (2122549993).

6436434455 is a wasteful number, since it uses less digits than its factorization.

6436434455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3407.

The product of its digits is 2073600, while the sum is 44.

The square root of 6436434455 is about 80227.3921737457. The cubic root of 6436434455 is about 1860.1520721041.

The spelling of 6436434455 in words is "six billion, four hundred thirty-six million, four hundred thirty-four thousand, four hundred fifty-five".