21241662854 has 8 divisors (see below), whose sum is σ = 31940398920. Its totient is φ = 10594863216.

The previous prime is 21241662853. The next prime is 21241662887. The reversal of 21241662854 is 45826614212.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21241662851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12983084 + ... + 12984719.

It is an arithmetic number, because the mean of its divisors is an integer number (3992549865).

Almost surely, 2^21241662854 is an apocalyptic number.

21241662854 is a deficient number, since it is larger than the sum of its proper divisors (10698736066).

21241662854 is a wasteful number, since it uses less digits than its factorization.

21241662854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25968214.

The product of its digits is 184320, while the sum is 41.

The spelling of 21241662854 in words is "twenty-one billion, two hundred forty-one million, six hundred sixty-two thousand, eight hundred fifty-four".