21552503541203 has 2 divisors, whose sum is σ = 21552503541204. Its totient is φ = 21552503541202.

The previous prime is 21552503541199. The next prime is 21552503541209. The reversal of 21552503541203 is 30214530525512.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21552503541203 - 2² = 21552503541199 is a prime.

It is not a weakly prime, because it can be changed into another prime (21552503541209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10776251770601 + 10776251770602.

It is an arithmetic number, because the mean of its divisors is an integer number (10776251770602).

Almost surely, 2^{21552503541203} is an apocalyptic number.

21552503541203 is a deficient number, since it is larger than the sum of its proper divisors (1).

21552503541203 is an equidigital number, since it uses as much as digits as its factorization.

21552503541203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 180000, while the sum is 38.

The spelling of 21552503541203 in words is "twenty-one trillion, five hundred fifty-two billion, five hundred three million, five hundred forty-one thousand, two hundred three".