33211445145 has 64 divisors (see below), whose sum is σ = 54654912000. Its totient is φ = 17216686080.

The previous prime is 33211445093. The next prime is 33211445147. The reversal of 33211445145 is 54154411233.

It is not a de Polignac number, because 33211445145 - 2⁹ = 33211444633 is a prime.

It is a super-2 number, since 2×33211445145² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (33211445147) 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 63 ways as a sum of consecutive naturals, for example, 20487435 + ... + 20489055.

It is an arithmetic number, because the mean of its divisors is an integer number (853983000).

Almost surely, 2^33211445145 is an apocalyptic number.

It is an amenable number.

33211445145 is a deficient number, since it is larger than the sum of its proper divisors (21443466855).

33211445145 is a wasteful number, since it uses less digits than its factorization.

33211445145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1970.

The product of its digits is 28800, while the sum is 33.

Adding to 33211445145 its reverse (54154411233), we get a palindrome (87365856378).

The spelling of 33211445145 in words is "thirty-three billion, two hundred eleven million, four hundred forty-five thousand, one hundred forty-five".