133451053440 has 64 divisors (see below), whose sum is σ = 425375238960. Its totient is φ = 35586947072.

The previous prime is 133451053403. The next prime is 133451053447. The reversal of 133451053440 is 44350154331.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133451053447) by changing a digit.

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, 34750959 + ... + 34754798.

Almost surely, 2^133451053440 is an apocalyptic number.

133451053440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133451053440 is an abundant number, since it is smaller than the sum of its proper divisors (291924185520).

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

133451053440 is an equidigital number, since it uses as much as digits as its factorization.

133451053440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69505779 (or 69505767 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 33.

The spelling of 133451053440 in words is "one hundred thirty-three billion, four hundred fifty-one million, fifty-three thousand, four hundred forty".