13664066442066 has 24 divisors (see below), whose sum is σ = 29613047241024. Its totient is φ = 4553524206360.

The previous prime is 13664066442043. The next prime is 13664066442079. The reversal of 13664066442066 is 66024466046631.

13664066442066 is a `hidden beast` number, since 1 + 3 + 66 + 40 + 6 + 64 + 420 + 66 = 666.

It is a super-2 number, since 2×13664066442066² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 96978286 + ... + 97119081.

It is an arithmetic number, because the mean of its divisors is an integer number (1233876968376).

Almost surely, 2^{13664066442066} is an apocalyptic number.

13664066442066 is an abundant number, since it is smaller than the sum of its proper divisors (15948980798958).

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

13664066442066 is a wasteful number, since it uses less digits than its factorization.

13664066442066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194101286 (or 194101283 counting only the distinct ones).

The product of its (nonzero) digits is 17915904, while the sum is 54.

The spelling of 13664066442066 in words is "thirteen trillion, six hundred sixty-four billion, sixty-six million, four hundred forty-two thousand, sixty-six".