6461165215 has 8 divisors (see below), whose sum is σ = 7765385760. Its totient is φ = 5160940512.

The previous prime is 6461165203. The next prime is 6461165237. The reversal of 6461165215 is 5125611646.

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

It is a cyclic number.

It is not a de Polignac number, because 6461165215 - 2¹³ = 6461157023 is a prime.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 995400 + ... + 1001869.

It is an arithmetic number, because the mean of its divisors is an integer number (970673220).

Almost surely, 2^6461165215 is an apocalyptic number.

6461165215 is a deficient number, since it is larger than the sum of its proper divisors (1304220545).

6461165215 is a wasteful number, since it uses less digits than its factorization.

6461165215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1997921.

The product of its digits is 43200, while the sum is 37.

The square root of 6461165215 is about 80381.3735575600. The cubic root of 6461165215 is about 1862.5314526466.

The spelling of 6461165215 in words is "six billion, four hundred sixty-one million, one hundred sixty-five thousand, two hundred fifteen".