216451134133 has 16 divisors (see below), whose sum is σ = 236533965696. Its totient is φ = 196862258880.

The previous prime is 216451134121. The next prime is 216451134143. The reversal of 216451134133 is 331431154612.

It is a cyclic number.

It is not a de Polignac number, because 216451134133 - 2³³ = 207861199541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216451134103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1400610 + ... + 1547452.

It is an arithmetic number, because the mean of its divisors is an integer number (14783372856).

Almost surely, 2^216451134133 is an apocalyptic number.

It is an amenable number.

216451134133 is a deficient number, since it is larger than the sum of its proper divisors (20082831563).

216451134133 is a wasteful number, since it uses less digits than its factorization.

216451134133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148524.

The product of its digits is 25920, while the sum is 34.

Adding to 216451134133 its reverse (331431154612), we get a palindrome (547882288745).

The spelling of 216451134133 in words is "two hundred sixteen billion, four hundred fifty-one million, one hundred thirty-four thousand, one hundred thirty-three".