21248854563152 has 40 divisors (see below), whose sum is σ = 42498192417792. Its totient is φ = 10281586896000.

The previous prime is 21248854563151. The next prime is 21248854563173. The reversal of 21248854563152 is 25136545884212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21248854563151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56928878 + ... + 57300914.

Almost surely, 2^{21248854563152} is an apocalyptic number.

It is an amenable number.

21248854563152 is an abundant number, since it is smaller than the sum of its proper divisors (21249337854640).

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

21248854563152 is a wasteful number, since it uses less digits than its factorization.

21248854563152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487227 (or 487221 counting only the distinct ones).

The product of its digits is 18432000, while the sum is 56.

The spelling of 21248854563152 in words is "twenty-one trillion, two hundred forty-eight billion, eight hundred fifty-four million, five hundred sixty-three thousand, one hundred fifty-two".