133253665563 has 8 divisors (see below), whose sum is σ = 177675773968. Its totient is φ = 88833667104.

The previous prime is 133253665549. The next prime is 133253665591. The reversal of 133253665563 is 365566352331.

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

It is not a de Polignac number, because 133253665563 - 2¹² = 133253661467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133253665163) 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, 373720 + ... + 637317.

It is an arithmetic number, because the mean of its divisors is an integer number (22209471746).

Almost surely, 2^133253665563 is an apocalyptic number.

133253665563 is a deficient number, since it is larger than the sum of its proper divisors (44422108405).

133253665563 is a wasteful number, since it uses less digits than its factorization.

133253665563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1054973.

The product of its digits is 4374000, while the sum is 48.

The spelling of 133253665563 in words is "one hundred thirty-three billion, two hundred fifty-three million, six hundred sixty-five thousand, five hundred sixty-three".