6461434509 has 8 divisors (see below), whose sum is σ = 8615978112. Its totient is φ = 4307256960.

The previous prime is 6461434493. The next prime is 6461434513. The reversal of 6461434509 is 9054341646.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6461434509 - 2⁴ = 6461434493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6461434559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47269 + ... + 123114.

It is an arithmetic number, because the mean of its divisors is an integer number (1076997264).

Almost surely, 2^6461434509 is an apocalyptic number.

It is an amenable number.

6461434509 is a deficient number, since it is larger than the sum of its proper divisors (2154543603).

6461434509 is a wasteful number, since it uses less digits than its factorization.

6461434509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183027.

The product of its (nonzero) digits is 311040, while the sum is 42.

The square root of 6461434509 is about 80383.0486421111. The cubic root of 6461434509 is about 1862.5573283497.

The spelling of 6461434509 in words is "six billion, four hundred sixty-one million, four hundred thirty-four thousand, five hundred nine".