20660264046 has 12 divisors (see below), whose sum is σ = 44763905472. Its totient is φ = 6886754676.

The previous prime is 20660264021. The next prime is 20660264047. The reversal of 20660264046 is 64046206602.

20660264046 is a `hidden beast` number, since 2 + 0 + 6 + 6 + 0 + 2 + 640 + 4 + 6 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 20660264046.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20660264047) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 573896206 + ... + 573896241.

It is an arithmetic number, because the mean of its divisors is an integer number (3730325456).

Almost surely, 2^20660264046 is an apocalyptic number.

20660264046 is an abundant number, since it is smaller than the sum of its proper divisors (24103641426).

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

20660264046 is a wasteful number, since it uses less digits than its factorization.

20660264046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1147792455 (or 1147792452 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 36.

The spelling of 20660264046 in words is "twenty billion, six hundred sixty million, two hundred sixty-four thousand, forty-six".