21663411150069 has 48 divisors (see below), whose sum is σ = 34631558567424. Its totient is φ = 12964354156800.

The previous prime is 21663411150067. The next prime is 21663411150083. The reversal of 21663411150069 is 96005111436612.

21663411150069 is a `hidden beast` number, since 2 + 1 + 6 + 634 + 1 + 1 + 1 + 5 + 0 + 0 + 6 + 9 = 666.

It is not a de Polignac number, because 21663411150069 - 2¹ = 21663411150067 is a prime.

It is a super-2 number, since 2×21663411150069² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21663411150067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5768637 + ... + 8752370.

It is an arithmetic number, because the mean of its divisors is an integer number (721490803488).

Almost surely, 2^{21663411150069} is an apocalyptic number.

It is an amenable number.

21663411150069 is a deficient number, since it is larger than the sum of its proper divisors (12968147417355).

21663411150069 is a wasteful number, since it uses less digits than its factorization.

21663411150069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14521378 (or 14521375 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The spelling of 21663411150069 in words is "twenty-one trillion, six hundred sixty-three billion, four hundred eleven million, one hundred fifty thousand, sixty-nine".