20664477446602 has 16 divisors (see below), whose sum is σ = 34041543084000. Its totient is φ = 9329904397840.

The previous prime is 20664477446593. The next prime is 20664477446621.

20664477446602 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×20664477446602² (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 7 ways as a sum of consecutive naturals, for example, 3151991452 + ... + 3151998007.

It is an arithmetic number, because the mean of its divisors is an integer number (2127596442750).

Almost surely, 2^{20664477446602} is an apocalyptic number.

20664477446602 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20664477446602 is a deficient number, since it is larger than the sum of its proper divisors (13377065637398).

20664477446602 is a wasteful number, since it uses less digits than its factorization.

20664477446602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6303989621.

The product of its (nonzero) digits is 65028096, while the sum is 58.

The spelling of 20664477446602 in words is "twenty trillion, six hundred sixty-four billion, four hundred seventy-seven million, four hundred forty-six thousand, six hundred two".