21363425310005 has 8 divisors (see below), whose sum is σ = 25660091772600. Its totient is φ = 17074752647616.

The previous prime is 21363425309999. The next prime is 21363425310041. The reversal of 21363425310005 is 50001352436312.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3559810468516 + 17803614841489 = 1886746^2 + 4219433^2 .

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 21363425310005 - 2²⁴ = 21363408532789 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1998444170 + ... + 1998454859.

It is an arithmetic number, because the mean of its divisors is an integer number (3207511471575).

Almost surely, 2^{21363425310005} is an apocalyptic number.

It is an amenable number.

21363425310005 is a deficient number, since it is larger than the sum of its proper divisors (4296666462595).

21363425310005 is a wasteful number, since it uses less digits than its factorization.

21363425310005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3996900103.

The product of its (nonzero) digits is 64800, while the sum is 35.

Adding to 21363425310005 its reverse (50001352436312), we get a palindrome (71364777746317).

The spelling of 21363425310005 in words is "twenty-one trillion, three hundred sixty-three billion, four hundred twenty-five million, three hundred ten thousand, five".