21043510150 has 24 divisors (see below), whose sum is σ = 42151770864. Its totient is φ = 7769911200.

The previous prime is 21043510139. The next prime is 21043510183. The reversal of 21043510150 is 5101534012.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16186666 + ... + 16187965.

It is an arithmetic number, because the mean of its divisors is an integer number (1756323786).

Almost surely, 2^21043510150 is an apocalyptic number.

21043510150 is an abundant number, since it is smaller than the sum of its proper divisors (21108260714).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21043510150 is a wasteful number, since it uses less digits than its factorization.

21043510150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32374656 (or 32374651 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 22.

The spelling of 21043510150 in words is "twenty-one billion, forty-three million, five hundred ten thousand, one hundred fifty".