21441000415 has 4 divisors (see below), whose sum is σ = 25729200504. Its totient is φ = 17152800328.

The previous prime is 21441000409. The next prime is 21441000421. The reversal of 21441000415 is 51400014412.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (21441000409) and next prime (21441000421).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21441000415 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2144100037 + ... + 2144100046.

It is an arithmetic number, because the mean of its divisors is an integer number (6432300126).

Almost surely, 2^21441000415 is an apocalyptic number.

21441000415 is a deficient number, since it is larger than the sum of its proper divisors (4288200089).

21441000415 is an equidigital number, since it uses as much as digits as its factorization.

21441000415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4288200088.

The product of its (nonzero) digits is 640, while the sum is 22.

Adding to 21441000415 its reverse (51400014412), we get a palindrome (72841014827).

The spelling of 21441000415 in words is "twenty-one billion, four hundred forty-one million, four hundred fifteen", and thus it is an aban number.