21406036330050 has 48 divisors (see below), whose sum is σ = 56209733052192. Its totient is φ = 5372495392000.

The previous prime is 21406036330037. The next prime is 21406036330057. The reversal of 21406036330050 is 5003363060412.

It is a junction number, because it is equal to n+sod(n) for n = 21406036329993 and 21406036330020.

It is not an unprimeable number, because it can be changed into a prime (21406036330057) by changing a digit.

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, 4197259476 + ... + 4197264575.

It is an arithmetic number, because the mean of its divisors is an integer number (1171036105254).

Almost surely, 2^{21406036330050} is an apocalyptic number.

21406036330050 is an abundant number, since it is smaller than the sum of its proper divisors (34803696722142).

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

21406036330050 is a wasteful number, since it uses less digits than its factorization.

21406036330050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8394524083 (or 8394524078 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 33.

Adding to 21406036330050 its reverse (5003363060412), we get a palindrome (26409399390462).

The spelling of 21406036330050 in words is "twenty-one trillion, four hundred six billion, thirty-six million, three hundred thirty thousand, fifty".