133871544320 has 48 divisors (see below), whose sum is σ = 321213290580. Its totient is φ = 53548613632.

The previous prime is 133871544319. The next prime is 133871544343. The reversal of 133871544320 is 23445178331.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 133616567296 + 254977024 = 365536^2 + 15968^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6526457 + ... + 6546936.

Almost surely, 2^133871544320 is an apocalyptic number.

133871544320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133871544320 is an abundant number, since it is smaller than the sum of its proper divisors (187341746260).

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

133871544320 is an equidigital number, since it uses as much as digits as its factorization.

133871544320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13073420 (or 13073400 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 41.

The spelling of 133871544320 in words is "one hundred thirty-three billion, eight hundred seventy-one million, five hundred forty-four thousand, three hundred twenty".