21153446144050 has 96 divisors (see below), whose sum is σ = 44686197114624. Its totient is φ = 7381741248000.

The previous prime is 21153446144029. The next prime is 21153446144119. The reversal of 21153446144050 is 5044164435112.

It is a junction number, because it is equal to n+sod(n) for n = 21153446143994 and 21153446144012.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5634186 + ... + 8605285.

It is an arithmetic number, because the mean of its divisors is an integer number (465481219944).

Almost surely, 2^{21153446144050} is an apocalyptic number.

21153446144050 is an abundant number, since it is smaller than the sum of its proper divisors (23532750970574).

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

21153446144050 is a wasteful number, since it uses less digits than its factorization.

21153446144050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14239604 (or 14239599 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 40.

The spelling of 21153446144050 in words is "twenty-one trillion, one hundred fifty-three billion, four hundred forty-six million, one hundred forty-four thousand, fifty".