20247436166073 has 4 divisors (see below), whose sum is σ = 26996581554768. Its totient is φ = 13498290777380.

The previous prime is 20247436166033. The next prime is 20247436166101. The reversal of 20247436166073 is 37066163474202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20247436166073 - 2²¹ = 20247434068921 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20247436166033) 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 3 ways as a sum of consecutive naturals, for example, 3374572694343 + ... + 3374572694348.

It is an arithmetic number, because the mean of its divisors is an integer number (6749145388692).

Almost surely, 2^{20247436166073} is an apocalyptic number.

It is an amenable number.

20247436166073 is a deficient number, since it is larger than the sum of its proper divisors (6749145388695).

20247436166073 is an equidigital number, since it uses as much as digits as its factorization.

20247436166073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6749145388694.

The product of its (nonzero) digits is 6096384, while the sum is 51.

The spelling of 20247436166073 in words is "twenty trillion, two hundred forty-seven billion, four hundred thirty-six million, one hundred sixty-six thousand, seventy-three".