33144535021 has 12 divisors (see below), whose sum is σ = 35985002880. Its totient is φ = 30514170960.

The previous prime is 33144534967. The next prime is 33144535033. The reversal of 33144535021 is 12053544133.

It is not a de Polignac number, because 33144535021 - 2⁷ = 33144534893 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 (33144535121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 194685 + ... + 322786.

It is an arithmetic number, because the mean of its divisors is an integer number (2998750240).

Almost surely, 2^33144535021 is an apocalyptic number.

It is an amenable number.

33144535021 is a deficient number, since it is larger than the sum of its proper divisors (2840467859).

33144535021 is a wasteful number, since it uses less digits than its factorization.

33144535021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517876 (or 517863 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 31.

The spelling of 33144535021 in words is "thirty-three billion, one hundred forty-four million, five hundred thirty-five thousand, twenty-one".