21113202503448 has 144 divisors (see below), whose sum is σ = 66160518005400. Its totient is φ = 6061206412800.

The previous prime is 21113202503423. The next prime is 21113202503501. The reversal of 21113202503448 is 84430520231112.

21113202503448 is a `hidden beast` number, since 2 + 1 + 1 + 1 + 3 + 202 + 5 + 0 + 3 + 448 = 666.

21113202503448 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 63609793 + ... + 63940848.

Almost surely, 2^{21113202503448} is an apocalyptic number.

It is an amenable number.

21113202503448 is an abundant number, since it is smaller than the sum of its proper divisors (45047315501952).

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

21113202503448 is a wasteful number, since it uses less digits than its factorization.

21113202503448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127550694 (or 127550676 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The spelling of 21113202503448 in words is "twenty-one trillion, one hundred thirteen billion, two hundred two million, five hundred three thousand, four hundred forty-eight".