20473842584645 has 4 divisors (see below), whose sum is σ = 24568611101580. Its totient is φ = 16379074067712.

The previous prime is 20473842584627. The next prime is 20473842584653. The reversal of 20473842584645 is 54648524837402.

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 7165011976516 + 13308830608129 = 2676754^2 + 3648127^2 .

It is a cyclic number.

It is not a de Polignac number, because 20473842584645 - 2⁸ = 20473842584389 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2047384258460 + ... + 2047384258469.

It is an arithmetic number, because the mean of its divisors is an integer number (6142152775395).

Almost surely, 2^{20473842584645} is an apocalyptic number.

It is an amenable number.

20473842584645 is a deficient number, since it is larger than the sum of its proper divisors (4094768516935).

20473842584645 is an equidigital number, since it uses as much as digits as its factorization.

20473842584645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4094768516934.

The product of its (nonzero) digits is 206438400, while the sum is 62.

The spelling of 20473842584645 in words is "twenty trillion, four hundred seventy-three billion, eight hundred forty-two million, five hundred eighty-four thousand, six hundred forty-five".