21116006424325 has 24 divisors (see below), whose sum is σ = 27596967247520. Its totient is φ = 15983374766400.

The previous prime is 21116006424311. The next prime is 21116006424379. The reversal of 21116006424325 is 52342460061112.

It is a de Polignac number, because none of the positive numbers 2^k-21116006424325 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 23 ways as a sum of consecutive naturals, for example, 27869346 + ... + 28616995.

Almost surely, 2^{21116006424325} is an apocalyptic number.

21116006424325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

21116006424325 is a deficient number, since it is larger than the sum of its proper divisors (6480960823195).

21116006424325 is a wasteful number, since it uses less digits than its factorization.

21116006424325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56487157 (or 56487152 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 37.

Adding to 21116006424325 its reverse (52342460061112), we get a palindrome (73458466485437).

The spelling of 21116006424325 in words is "twenty-one trillion, one hundred sixteen billion, six million, four hundred twenty-four thousand, three hundred twenty-five".