133497549649 has 8 divisors (see below), whose sum is σ = 138147768360. Its totient is φ = 128850454656.

The previous prime is 133497549607. The next prime is 133497549667. The reversal of 133497549649 is 946945794331.

It can be written as a sum of positive squares in 4 ways, for example, as 19995939649 + 113501610000 = 141407^2 + 336900^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 133497549649 - 2²⁷ = 133363331921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133497549149) 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 7 ways as a sum of consecutive naturals, for example, 693802 + ... + 865075.

It is an arithmetic number, because the mean of its divisors is an integer number (17268471045).

Almost surely, 2^133497549649 is an apocalyptic number.

It is an amenable number.

133497549649 is a deficient number, since it is larger than the sum of its proper divisors (4650218711).

133497549649 is a wasteful number, since it uses less digits than its factorization.

133497549649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1561859.

The product of its digits is 88179840, while the sum is 64.

The spelling of 133497549649 in words is "one hundred thirty-three billion, four hundred ninety-seven million, five hundred forty-nine thousand, six hundred forty-nine".