21163454106 has 8 divisors (see below), whose sum is σ = 42326908224. Its totient is φ = 7054484700.

The previous prime is 21163454089. The next prime is 21163454119. The reversal of 21163454106 is 60145436112.

It is a sphenic number, since it is the product of 3 distinct primes.

21163454106 is an admirable 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 3 ways as a sum of consecutive naturals, for example, 1763621170 + ... + 1763621181.

It is an arithmetic number, because the mean of its divisors is an integer number (5290863528).

Almost surely, 2^21163454106 is an apocalyptic number.

21163454106 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

21163454106 is a wasteful number, since it uses less digits than its factorization.

21163454106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3527242356.

The product of its (nonzero) digits is 17280, while the sum is 33.

The spelling of 21163454106 in words is "twenty-one billion, one hundred sixty-three million, four hundred fifty-four thousand, one hundred six".