33145445021 has 8 divisors (see below), whose sum is σ = 35951895840. Its totient is φ = 30375680112.

The previous prime is 33145445017. The next prime is 33145445041. The reversal of 33145445021 is 12054454133.

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 33145445021 - 2² = 33145445017 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 (33145445041) 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, 9169595 + ... + 9173208.

It is an arithmetic number, because the mean of its divisors is an integer number (4493986980).

Almost surely, 2^33145445021 is an apocalyptic number.

It is an amenable number.

33145445021 is a deficient number, since it is larger than the sum of its proper divisors (2806450819).

33145445021 is a wasteful number, since it uses less digits than its factorization.

33145445021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18342955.

The product of its (nonzero) digits is 28800, while the sum is 32.

Adding to 33145445021 its reverse (12054454133), we get a palindrome (45199899154).

The spelling of 33145445021 in words is "thirty-three billion, one hundred forty-five million, four hundred forty-five thousand, twenty-one".