21045524030 has 16 divisors (see below), whose sum is σ = 37884468960. Its totient is φ = 8417648352.

The previous prime is 21045523997. The next prime is 21045524047. The reversal of 21045524030 is 3042554012.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109151 + ... + 232389.

It is an arithmetic number, because the mean of its divisors is an integer number (2367779310).

Almost surely, 2^21045524030 is an apocalyptic number.

21045524030 is a deficient number, since it is larger than the sum of its proper divisors (16838944930).

21045524030 is a wasteful number, since it uses less digits than its factorization.

21045524030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140323.

The product of its (nonzero) digits is 4800, while the sum is 26.

The spelling of 21045524030 in words is "twenty-one billion, forty-five million, five hundred twenty-four thousand, thirty".