21443433010 has 16 divisors (see below), whose sum is σ = 38972920896. Its totient is φ = 8494097328.

The previous prime is 21443433007. The next prime is 21443433023. The reversal of 21443433010 is 1033434412.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10408404 + ... + 10410463.

It is an arithmetic number, because the mean of its divisors is an integer number (2435807556).

Almost surely, 2^21443433010 is an apocalyptic number.

21443433010 is a deficient number, since it is larger than the sum of its proper divisors (17529487886).

21443433010 is a wasteful number, since it uses less digits than its factorization.

21443433010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20818977.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 21443433010 its reverse (1033434412), we get a palindrome (22476867422).

The spelling of 21443433010 in words is "twenty-one billion, four hundred forty-three million, four hundred thirty-three thousand, ten".