133528478265 has 256 divisors, whose sum is σ = 308448000000. Its totient is φ = 54396002304.

The previous prime is 133528478257. The next prime is 133528478329. The reversal of 133528478265 is 562874825331.

133528478265 is a `hidden beast` number, since 1 + 3 + 35 + 284 + 78 + 265 = 666.

It is not a de Polignac number, because 133528478265 - 2³ = 133528478257 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 17453161 + ... + 17460809.

It is an arithmetic number, because the mean of its divisors is an integer number (1204875000).

Almost surely, 2^133528478265 is an apocalyptic number.

133528478265 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

133528478265 is an abundant number, since it is smaller than the sum of its proper divisors (174919521735).

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

133528478265 is a wasteful number, since it uses less digits than its factorization.

133528478265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7726 (or 7706 counting only the distinct ones).

The product of its digits is 9676800, while the sum is 54.

The spelling of 133528478265 in words is "one hundred thirty-three billion, five hundred twenty-eight million, four hundred seventy-eight thousand, two hundred sixty-five".