21301413406 has 32 divisors (see below), whose sum is σ = 41638968000. Its totient is φ = 7931229696.

The previous prime is 21301413373. The next prime is 21301413443. The reversal of 21301413406 is 60431410312.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3439281 + ... + 3445468.

It is an arithmetic number, because the mean of its divisors is an integer number (1301217750).

Almost surely, 2^21301413406 is an apocalyptic number.

21301413406 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

21301413406 is a deficient number, since it is larger than the sum of its proper divisors (20337554594).

21301413406 is a wasteful number, since it uses less digits than its factorization.

21301413406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6884788.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 21301413406 its reverse (60431410312), we get a palindrome (81732823718).

The spelling of 21301413406 in words is "twenty-one billion, three hundred one million, four hundred thirteen thousand, four hundred six".