133318775424 has 64 divisors (see below), whose sum is σ = 354917160000. Its totient is φ = 44340559872.

The previous prime is 133318775417. The next prime is 133318775449. The reversal of 133318775424 is 424577813331.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 214204 + ... + 559035.

It is an arithmetic number, because the mean of its divisors is an integer number (5545580625).

Almost surely, 2^133318775424 is an apocalyptic number.

It is an amenable number.

133318775424 is an abundant number, since it is smaller than the sum of its proper divisors (221598384576).

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

133318775424 is an equidigital number, since it uses as much as digits as its factorization.

133318775424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 773705 (or 773693 counting only the distinct ones).

The product of its digits is 1693440, while the sum is 48.

The spelling of 133318775424 in words is "one hundred thirty-three billion, three hundred eighteen million, seven hundred seventy-five thousand, four hundred twenty-four".