20004352467677 has 4 divisors (see below), whose sum is σ = 20492263503516. Its totient is φ = 19516441431840.

The previous prime is 20004352467613. The next prime is 20004352467709. The reversal of 20004352467677 is 77676425340002.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4358933893636 + 15645418574041 = 2087806^2 + 3955429^2 .

It is a cyclic number.

It is not a de Polignac number, because 20004352467677 - 2⁶ = 20004352467613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20004352467977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 243955517858 + ... + 243955517939.

It is an arithmetic number, because the mean of its divisors is an integer number (5123065875879).

Almost surely, 2^{20004352467677} is an apocalyptic number.

It is an amenable number.

20004352467677 is a deficient number, since it is larger than the sum of its proper divisors (487911035839).

20004352467677 is an equidigital number, since it uses as much as digits as its factorization.

20004352467677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487911035838.

The product of its (nonzero) digits is 11854080, while the sum is 53.

The spelling of 20004352467677 in words is "twenty trillion, four billion, three hundred fifty-two million, four hundred sixty-seven thousand, six hundred seventy-seven".