133501785285 has 32 divisors (see below), whose sum is σ = 236303308800. Its totient is φ = 63816468800.

The previous prime is 133501785271. The next prime is 133501785323. The reversal of 133501785285 is 582587105331.

It is not a de Polignac number, because 133501785285 - 2⁸ = 133501785029 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5686185 + ... + 5709614.

It is an arithmetic number, because the mean of its divisors is an integer number (7384478400).

Almost surely, 2^133501785285 is an apocalyptic number.

133501785285 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

133501785285 is a deficient number, since it is larger than the sum of its proper divisors (102801523515).

133501785285 is a wasteful number, since it uses less digits than its factorization.

133501785285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11395889.

The product of its (nonzero) digits is 1008000, while the sum is 48.

The spelling of 133501785285 in words is "one hundred thirty-three billion, five hundred one million, seven hundred eighty-five thousand, two hundred eighty-five".