133573378655 has 8 divisors (see below), whose sum is σ = 164620164192. Its totient is φ = 103970629728.

The previous prime is 133573378579. The next prime is 133573378667. The reversal of 133573378655 is 556873375331.

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 133573378655 - 2¹⁴ = 133573362271 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 133573378655.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 361008947 + ... + 361009316.

It is an arithmetic number, because the mean of its divisors is an integer number (20577520524).

Almost surely, 2^133573378655 is an apocalyptic number.

133573378655 is a deficient number, since it is larger than the sum of its proper divisors (31046785537).

133573378655 is an equidigital number, since it uses as much as digits as its factorization.

133573378655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 722018305.

The product of its digits is 23814000, while the sum is 56.

The spelling of 133573378655 in words is "one hundred thirty-three billion, five hundred seventy-three million, three hundred seventy-eight thousand, six hundred fifty-five".