21443963010 has 32 divisors (see below), whose sum is σ = 51572989440. Its totient is φ = 5706448128.

The previous prime is 21443962999. The next prime is 21443963011. The reversal of 21443963010 is 1036934412.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (21443963011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 731767 + ... + 760506.

It is an arithmetic number, because the mean of its divisors is an integer number (1611655920).

Almost surely, 2^21443963010 is an apocalyptic number.

21443963010 is an abundant number, since it is smaller than the sum of its proper divisors (30129026430).

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

21443963010 is a wasteful number, since it uses less digits than its factorization.

21443963010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1492762.

The product of its (nonzero) digits is 15552, while the sum is 33.

The spelling of 21443963010 in words is "twenty-one billion, four hundred forty-three million, nine hundred sixty-three thousand, ten".