133845869787 has 12 divisors (see below), whose sum is σ = 207597675816. Its totient is φ = 76483354080.

The previous prime is 133845869779. The next prime is 133845869813. The reversal of 133845869787 is 787968548331.

It is not a de Polignac number, because 133845869787 - 2³ = 133845869779 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133845869747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 455257914 + ... + 455258207.

It is an arithmetic number, because the mean of its divisors is an integer number (17299806318).

Almost surely, 2^133845869787 is an apocalyptic number.

133845869787 is a deficient number, since it is larger than the sum of its proper divisors (73751806029).

133845869787 is an equidigital number, since it uses as much as digits as its factorization.

133845869787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 910516138 (or 910516131 counting only the distinct ones).

The product of its digits is 243855360, while the sum is 69.

The spelling of 133845869787 in words is "one hundred thirty-three billion, eight hundred forty-five million, eight hundred sixty-nine thousand, seven hundred eighty-seven".