133801278321 has 8 divisors (see below), whose sum is σ = 178464688480. Its totient is φ = 89169360192.

The previous prime is 133801278271. The next prime is 133801278341. The reversal of 133801278321 is 123872108331.

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

It is not a de Polignac number, because 133801278321 - 2⁹ = 133801277809 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 133801278321.

It is not an unprimeable number, because it can be changed into a prime (133801278341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7863091 + ... + 7880088.

It is an arithmetic number, because the mean of its divisors is an integer number (22308086060).

Almost surely, 2^133801278321 is an apocalyptic number.

It is an amenable number.

133801278321 is a deficient number, since it is larger than the sum of its proper divisors (44663410159).

133801278321 is a wasteful number, since it uses less digits than its factorization.

133801278321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15746015.

The product of its (nonzero) digits is 48384, while the sum is 39.

The spelling of 133801278321 in words is "one hundred thirty-three billion, eight hundred one million, two hundred seventy-eight thousand, three hundred twenty-one".