6461340365 has 16 divisors (see below), whose sum is σ = 8211595968. Its totient is φ = 4863887616.

The previous prime is 6461340349. The next prime is 6461340397. The reversal of 6461340365 is 5630431646.

It is a cyclic number.

It is not a de Polignac number, because 6461340365 - 2⁴ = 6461340349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 665234 + ... + 674876.

It is an arithmetic number, because the mean of its divisors is an integer number (513224748).

Almost surely, 2^6461340365 is an apocalyptic number.

It is an amenable number.

6461340365 is a deficient number, since it is larger than the sum of its proper divisors (1750255603).

6461340365 is a wasteful number, since it uses less digits than its factorization.

6461340365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17548.

The product of its (nonzero) digits is 155520, while the sum is 38.

The square root of 6461340365 is about 80382.4630438754. The cubic root of 6461340365 is about 1862.5482823992.

The spelling of 6461340365 in words is "six billion, four hundred sixty-one million, three hundred forty thousand, three hundred sixty-five".