133338956537 has 8 divisors (see below), whose sum is σ = 137941185600. Its totient is φ = 128737016464.

The previous prime is 133338956521. The next prime is 133338956549. The reversal of 133338956537 is 735659833331.

It is a happy number.

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 133338956537 - 2⁴ = 133338956521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133338956507) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1324268 + ... + 1421394.

It is an arithmetic number, because the mean of its divisors is an integer number (17242648200).

Almost surely, 2^133338956537 is an apocalyptic number.

It is an amenable number.

133338956537 is a deficient number, since it is larger than the sum of its proper divisors (4602229063).

133338956537 is an equidigital number, since it uses as much as digits as its factorization.

133338956537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144495.

The product of its digits is 18370800, while the sum is 56.

The spelling of 133338956537 in words is "one hundred thirty-three billion, three hundred thirty-eight million, nine hundred fifty-six thousand, five hundred thirty-seven".