133213330565 has 16 divisors (see below), whose sum is σ = 182736715392. Its totient is φ = 91324209984.

The previous prime is 133213330531. The next prime is 133213330571. The reversal of 133213330565 is 565033312331.

It is not a de Polignac number, because 133213330565 - 2¹⁰ = 133213329541 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 312299 + ... + 603288.

It is an arithmetic number, because the mean of its divisors is an integer number (11421044712).

Almost surely, 2^133213330565 is an apocalyptic number.

It is an amenable number.

133213330565 is a deficient number, since it is larger than the sum of its proper divisors (49523384827).

133213330565 is an equidigital number, since it uses as much as digits as its factorization.

133213330565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 919756.

The product of its (nonzero) digits is 72900, while the sum is 35.

Adding to 133213330565 its reverse (565033312331), we get a palindrome (698246642896).

The spelling of 133213330565 in words is "one hundred thirty-three billion, two hundred thirteen million, three hundred thirty thousand, five hundred sixty-five".