21054343414 has 8 divisors (see below), whose sum is σ = 34010862480. Its totient is φ = 9717389256.

The previous prime is 21054343381. The next prime is 21054343417. The reversal of 21054343414 is 41434345012.

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

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21054343417) 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, 404891194 + ... + 404891245.

It is an arithmetic number, because the mean of its divisors is an integer number (4251357810).

Almost surely, 2^21054343414 is an apocalyptic number.

21054343414 is a deficient number, since it is larger than the sum of its proper divisors (12956519066).

21054343414 is a wasteful number, since it uses less digits than its factorization.

21054343414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 809782454.

The product of its (nonzero) digits is 23040, while the sum is 31.

Adding to 21054343414 its reverse (41434345012), we get a palindrome (62488688426).

The spelling of 21054343414 in words is "twenty-one billion, fifty-four million, three hundred forty-three thousand, four hundred fourteen".