8382119345721 has 81 divisors (see below), whose sum is σ = 13546746877573. Its totient is φ = 4990610990640.

The previous prime is 8382119345693. The next prime is 8382119345723. The reversal of 8382119345721 is 1275439112838.

The square root of 8382119345721 is 2895189.

It is a perfect power (a square), and thus also a powerful number.

8382119345721 is a `hidden beast` number, since 8 + 3 + 8 + 21 + 19 + 34 + 572 + 1 = 666.

It is not a de Polignac number, because 8382119345721 - 2⁵ = 8382119345689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8382119345723) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 5636932240 + ... + 5636933726.

Almost surely, 2^{8382119345721} is an apocalyptic number.

8382119345721 is the 2895189-th square number.

8382119345721 is the 1447595-th centered octagonal number.

It is an amenable number.

8382119345721 is a deficient number, since it is larger than the sum of its proper divisors (5164627531852).

8382119345721 is an equidigital number, since it uses as much as digits as its factorization.

8382119345721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3120 (or 1560 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 54.

The spelling of 8382119345721 in words is "eight trillion, three hundred eighty-two billion, one hundred nineteen million, three hundred forty-five thousand, seven hundred twenty-one".