21033524143 has 8 divisors (see below), whose sum is σ = 21209837616. Its totient is φ = 20857449600.

The previous prime is 21033524137. The next prime is 21033524147. The reversal of 21033524143 is 34142533012.

It is a happy number.

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 21033524143 - 2⁹ = 21033523631 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 (21033524147) 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, 119305 + ... + 237277.

It is an arithmetic number, because the mean of its divisors is an integer number (2651229702).

Almost surely, 2^21033524143 is an apocalyptic number.

21033524143 is a deficient number, since it is larger than the sum of its proper divisors (176313473).

21033524143 is a wasteful number, since it uses less digits than its factorization.

21033524143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119465.

The product of its (nonzero) digits is 8640, while the sum is 28.

The spelling of 21033524143 in words is "twenty-one billion, thirty-three million, five hundred twenty-four thousand, one hundred forty-three".