133332131920 has 40 divisors (see below), whose sum is σ = 333843148296. Its totient is φ = 49230325248.

The previous prime is 133332131893. The next prime is 133332131939. The reversal of 133332131920 is 29131233331.

It can be written as a sum of positive squares in 4 ways, for example, as 3827154496 + 129504977424 = 61864^2 + 359868^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 64100947 + ... + 64103026.

Almost surely, 2^133332131920 is an apocalyptic number.

133332131920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133332131920 is an abundant number, since it is smaller than the sum of its proper divisors (200511016376).

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

133332131920 is a wasteful number, since it uses less digits than its factorization.

133332131920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128203999 (or 128203993 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 31.

The spelling of 133332131920 in words is "one hundred thirty-three billion, three hundred thirty-two million, one hundred thirty-one thousand, nine hundred twenty".