20664262829046 has 16 divisors (see below), whose sum is σ = 41328571474944. Its totient is φ = 6888079973544.

The previous prime is 20664262829033. The next prime is 20664262829047. The reversal of 20664262829046 is 64092826246602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20664262829047) by changing a digit.

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, 7590111 + ... + 9946773.

It is an arithmetic number, because the mean of its divisors is an integer number (2583035717184).

Almost surely, 2^{20664262829046} is an apocalyptic number.

20664262829046 is an abundant number, since it is smaller than the sum of its proper divisors (20664308645898).

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

20664262829046 is a wasteful number, since it uses less digits than its factorization.

20664262829046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3818075.

The product of its (nonzero) digits is 23887872, while the sum is 57.

The spelling of 20664262829046 in words is "twenty trillion, six hundred sixty-four billion, two hundred sixty-two million, eight hundred twenty-nine thousand, forty-six".