20323312261045 has 4 divisors (see below), whose sum is σ = 24387974713260. Its totient is φ = 16258649808832.

The previous prime is 20323312261013. The next prime is 20323312261067. The reversal of 20323312261045 is 54016221332302.

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 8018083150884 + 12305229110161 = 2831622^2 + 3507881^2 .

It is a cyclic number.

It is not a de Polignac number, because 20323312261045 - 2⁵ = 20323312261013 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20323312261045.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2032331226100 + ... + 2032331226109.

It is an arithmetic number, because the mean of its divisors is an integer number (6096993678315).

Almost surely, 2^{20323312261045} is an apocalyptic number.

It is an amenable number.

20323312261045 is a deficient number, since it is larger than the sum of its proper divisors (4064662452215).

20323312261045 is an equidigital number, since it uses as much as digits as its factorization.

20323312261045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4064662452214.

The product of its (nonzero) digits is 51840, while the sum is 34.

Adding to 20323312261045 its reverse (54016221332302), we get a palindrome (74339533593347).

The spelling of 20323312261045 in words is "twenty trillion, three hundred twenty-three billion, three hundred twelve million, two hundred sixty-one thousand, forty-five".