133673161664 has 28 divisors (see below), whose sum is σ = 303151635504. Its totient is φ = 57288497664.

The previous prime is 133673161651. The next prime is 133673161667. The reversal of 133673161664 is 466161376331.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133673161667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 149188349 + ... + 149189244.

Almost surely, 2^133673161664 is an apocalyptic number.

133673161664 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

133673161664 is an abundant number, since it is smaller than the sum of its proper divisors (169478473840).

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

133673161664 is an equidigital number, since it uses as much as digits as its factorization.

133673161664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298377612 (or 298377602 counting only the distinct ones).

The product of its digits is 979776, while the sum is 47.

The spelling of 133673161664 in words is "one hundred thirty-three billion, six hundred seventy-three million, one hundred sixty-one thousand, six hundred sixty-four".