21452253302180 has 24 divisors (see below), whose sum is σ = 45057877119360. Its totient is φ = 8579349857120.

The previous prime is 21452253302167. The next prime is 21452253302251. The reversal of 21452253302180 is 8120335225412.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96853100 + ... + 97074339.

It is an arithmetic number, because the mean of its divisors is an integer number (1877411546640).

Almost surely, 2^{21452253302180} is an apocalyptic number.

21452253302180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21452253302180 is an abundant number, since it is smaller than the sum of its proper divisors (23605623817180).

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

21452253302180 is a wasteful number, since it uses less digits than its factorization.

21452253302180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193932979 (or 193932977 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 38.

Adding to 21452253302180 its reverse (8120335225412), we get a palindrome (29572588527592).

The spelling of 21452253302180 in words is "twenty-one trillion, four hundred fifty-two billion, two hundred fifty-three million, three hundred two thousand, one hundred eighty".