6528135372 has 72 divisors (see below), whose sum is σ = 17283173376. Its totient is φ = 1914396000.

The previous prime is 6528135347. The next prime is 6528135389. The reversal of 6528135372 is 2735318256.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27504 + ... + 117527.

Almost surely, 2^6528135372 is an apocalyptic number.

6528135372 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

6528135372 is an abundant number, since it is smaller than the sum of its proper divisors (10755038004).

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

6528135372 is a wasteful number, since it uses less digits than its factorization.

6528135372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145091 (or 145078 counting only the distinct ones).

The product of its digits is 302400, while the sum is 42.

The square root of 6528135372 is about 80796.8772416360. The cubic root of 6528135372 is about 1868.9444100127.

The spelling of 6528135372 in words is "six billion, five hundred twenty-eight million, one hundred thirty-five thousand, three hundred seventy-two".