21435445010 has 144 divisors (see below), whose sum is σ = 48991836096. Its totient is φ = 6612942336.

The previous prime is 21435444991. The next prime is 21435445019. The reversal of 21435445010 is 1054453412.

It is not an unprimeable number, because it can be changed into a prime (21435445019) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 10700669 + ... + 10702671.

It is an arithmetic number, because the mean of its divisors is an integer number (340221084).

Almost surely, 2^21435445010 is an apocalyptic number.

21435445010 is an abundant number, since it is smaller than the sum of its proper divisors (27556391086).

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

21435445010 is a wasteful number, since it uses less digits than its factorization.

21435445010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2097 (or 2057 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

Adding to 21435445010 its reverse (1054453412), we get a palindrome (22489898422).

The spelling of 21435445010 in words is "twenty-one billion, four hundred thirty-five million, four hundred forty-five thousand, ten".