6434211155 has 4 divisors (see below), whose sum is σ = 7721053392. Its totient is φ = 5147368920.

The previous prime is 6434211151. The next prime is 6434211197. The reversal of 6434211155 is 5511124346.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 6434211155 - 2² = 6434211151 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6434211151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 643421111 + ... + 643421120.

It is an arithmetic number, because the mean of its divisors is an integer number (1930263348).

Almost surely, 2^6434211155 is an apocalyptic number.

6434211155 is a deficient number, since it is larger than the sum of its proper divisors (1286842237).

6434211155 is a wasteful number, since it uses less digits than its factorization.

6434211155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1286842236.

The product of its digits is 14400, while the sum is 32.

The square root of 6434211155 is about 80213.5347369757. The cubic root of 6434211155 is about 1859.9378669459.

The spelling of 6434211155 in words is "six billion, four hundred thirty-four million, two hundred eleven thousand, one hundred fifty-five".