133394032768 has 16 divisors (see below), whose sum is σ = 265745924910. Its totient is φ = 66697016320.

The previous prime is 133394032747. The next prime is 133394032769. The reversal of 133394032768 is 867230493331.

It can be written as a sum of positive squares in only one way, i.e., 131212021824 + 2182010944 = 362232^2 + 46712^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a super-2 number, since 2×133394032768² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (133394032769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 521070313 + ... + 521070568.

Almost surely, 2^133394032768 is an apocalyptic number.

It is an amenable number.

133394032768 is a deficient number, since it is larger than the sum of its proper divisors (132351892142).

133394032768 is an equidigital number, since it uses as much as digits as its factorization.

133394032768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1042140895 (or 1042140883 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 49.

The spelling of 133394032768 in words is "one hundred thirty-three billion, three hundred ninety-four million, thirty-two thousand, seven hundred sixty-eight".