21436420010 has 16 divisors (see below), whose sum is σ = 38606754816. Its totient is φ = 8569857168.

The previous prime is 21436420007. The next prime is 21436420063. The reversal of 21436420010 is 1002463412.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 569714 + ... + 606173.

It is an arithmetic number, because the mean of its divisors is an integer number (2412922176).

Almost surely, 2^21436420010 is an apocalyptic number.

21436420010 is a deficient number, since it is larger than the sum of its proper divisors (17170334806).

21436420010 is a wasteful number, since it uses less digits than its factorization.

21436420010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1177717.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 21436420010 its reverse (1002463412), we get a palindrome (22438883422).

The spelling of 21436420010 in words is "twenty-one billion, four hundred thirty-six million, four hundred twenty thousand, ten".