8135885320 has 32 divisors (see below), whose sum is σ = 18486996120. Its totient is φ = 3222131200.

The previous prime is 8135885273. The next prime is 8135885323. The reversal of 8135885320 is 235885318.

It can be written as a sum of positive squares in 4 ways, for example, as 7800775684 + 335109636 = 88322^2 + 18306^2 .

It is not an unprimeable number, because it can be changed into a prime (8135885323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1002877 + ... + 1010956.

Almost surely, 2^8135885320 is an apocalyptic number.

It is an amenable number.

8135885320 is an abundant number, since it is smaller than the sum of its proper divisors (10351110800).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8135885320 is a wasteful number, since it uses less digits than its factorization.

8135885320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2013945 (or 2013941 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 43.

The square root of 8135885320 is about 90199.1425679868. The cubic root of 8135885320 is about 2011.2602609510.

The spelling of 8135885320 in words is "eight billion, one hundred thirty-five million, eight hundred eighty-five thousand, three hundred twenty".