21424041354415 has 8 divisors (see below), whose sum is σ = 29381542428960. Its totient is φ = 14690771214432.

The previous prime is 21424041354407. The next prime is 21424041354433. The reversal of 21424041354415 is 51445314042412.

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

It is a cyclic number.

It is not a de Polignac number, because 21424041354415 - 2³ = 21424041354407 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 306057733600 + ... + 306057733669.

It is an arithmetic number, because the mean of its divisors is an integer number (3672692803620).

Almost surely, 2^{21424041354415} is an apocalyptic number.

21424041354415 is a deficient number, since it is larger than the sum of its proper divisors (7957501074545).

21424041354415 is an equidigital number, since it uses as much as digits as its factorization.

21424041354415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612115467281.

The product of its (nonzero) digits is 307200, while the sum is 40.

Adding to 21424041354415 its reverse (51445314042412), we get a palindrome (72869355396827).

The spelling of 21424041354415 in words is "twenty-one trillion, four hundred twenty-four billion, forty-one million, three hundred fifty-four thousand, four hundred fifteen".