7853485521 has 8 divisors (see below), whose sum is σ = 11967216064. Its totient is φ = 4487706000.

The previous prime is 7853485513. The next prime is 7853485567. The reversal of 7853485521 is 1255843587.

7853485521 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 7853485521 - 2³ = 7853485513 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 (7853485571) 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, 186987730 + ... + 186987771.

It is an arithmetic number, because the mean of its divisors is an integer number (1495902008).

Almost surely, 2^7853485521 is an apocalyptic number.

It is an amenable number.

7853485521 is a deficient number, since it is larger than the sum of its proper divisors (4113730543).

7853485521 is a wasteful number, since it uses less digits than its factorization.

7853485521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373975511.

The product of its digits is 1344000, while the sum is 48.

The square root of 7853485521 is about 88619.8934833483. The cubic root of 7853485521 is about 1987.7151558856.

The spelling of 7853485521 in words is "seven billion, eight hundred fifty-three million, four hundred eighty-five thousand, five hundred twenty-one".