21033541045 has 64 divisors (see below), whose sum is σ = 28646784000. Its totient is φ = 14695050240.

The previous prime is 21033541033. The next prime is 21033541049. The reversal of 21033541045 is 54014533012.

It is not a de Polignac number, because 21033541045 - 2¹¹ = 21033538997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21033541049) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 34312159 + ... + 34312771.

It is an arithmetic number, because the mean of its divisors is an integer number (447606000).

Almost surely, 2^21033541045 is an apocalyptic number.

It is an amenable number.

21033541045 is a deficient number, since it is larger than the sum of its proper divisors (7613242955).

21033541045 is a wasteful number, since it uses less digits than its factorization.

21033541045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 910.

The product of its (nonzero) digits is 7200, while the sum is 28.

The spelling of 21033541045 in words is "twenty-one billion, thirty-three million, five hundred forty-one thousand, forty-five".