6414861521 has 8 divisors (see below), whose sum is σ = 6482811720. Its totient is φ = 6346948608.

The previous prime is 6414861511. The next prime is 6414861571. The reversal of 6414861521 is 1251684146.

It can be written as a sum of positive squares in 4 ways, for example, as 23658496 + 6391203025 = 4864^2 + 79945^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6414861521 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6414861511) 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 7 ways as a sum of consecutive naturals, for example, 460385 + ... + 474113.

It is an arithmetic number, because the mean of its divisors is an integer number (810351465).

Almost surely, 2^6414861521 is an apocalyptic number.

It is an amenable number.

6414861521 is a deficient number, since it is larger than the sum of its proper divisors (67950199).

6414861521 is a wasteful number, since it uses less digits than its factorization.

6414861521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18643.

The product of its digits is 46080, while the sum is 38.

The square root of 6414861521 is about 80092.8306466940. The cubic root of 6414861521 is about 1858.0715281276.

The spelling of 6414861521 in words is "six billion, four hundred fourteen million, eight hundred sixty-one thousand, five hundred twenty-one".