21411330155430 has 64 divisors (see below), whose sum is σ = 53046415116288. Its totient is φ = 5525340871680.

The previous prime is 21411330155377. The next prime is 21411330155441. The reversal of 21411330155430 is 3455103311412.

It is a junction number, because it is equal to n+sod(n) for n = 21411330155391 and 21411330155400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32800609 + ... + 33447011.

It is an arithmetic number, because the mean of its divisors is an integer number (828850236192).

Almost surely, 2^{21411330155430} is an apocalyptic number.

21411330155430 is an abundant number, since it is smaller than the sum of its proper divisors (31635084960858).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21411330155430 is a wasteful number, since it uses less digits than its factorization.

21411330155430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 682061.

The product of its (nonzero) digits is 21600, while the sum is 33.

Adding to 21411330155430 its reverse (3455103311412), we get a palindrome (24866433466842).

The spelling of 21411330155430 in words is "twenty-one trillion, four hundred eleven billion, three hundred thirty million, one hundred fifty-five thousand, four hundred thirty".