20470896289537 has 4 divisors (see below), whose sum is σ = 20506374446596. Its totient is φ = 20435418132480.

The previous prime is 20470896289531. The next prime is 20470896289549. The reversal of 20470896289537 is 73598269807402.

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 20064316621041 + 406579668496 = 4479321^2 + 637636^2 .

It is a cyclic number.

It is not a de Polignac number, because 20470896289537 - 2⁷ = 20470896289409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20470896289531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17739077664 + ... + 17739078817.

It is an arithmetic number, because the mean of its divisors is an integer number (5126593611649).

Almost surely, 2^{20470896289537} is an apocalyptic number.

It is an amenable number.

20470896289537 is a deficient number, since it is larger than the sum of its proper divisors (35478157059).

20470896289537 is an equidigital number, since it uses as much as digits as its factorization.

20470896289537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35478157058.

The product of its (nonzero) digits is 365783040, while the sum is 70.

The spelling of 20470896289537 in words is "twenty trillion, four hundred seventy billion, eight hundred ninety-six million, two hundred eighty-nine thousand, five hundred thirty-seven".