20243074042145 has 4 divisors (see below), whose sum is σ = 24291688850580. Its totient is φ = 16194459233712.

The previous prime is 20243074042097. The next prime is 20243074042171. The reversal of 20243074042145 is 54124047034202.

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 7267510172224 + 12975563869921 = 2695832^2 + 3602161^2 .

It is a cyclic number.

It is not a de Polignac number, because 20243074042145 - 2⁸ = 20243074041889 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20243074042099 and 20243074042108.

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, 2024307404210 + ... + 2024307404219.

It is an arithmetic number, because the mean of its divisors is an integer number (6072922212645).

Almost surely, 2^{20243074042145} is an apocalyptic number.

It is an amenable number.

20243074042145 is a deficient number, since it is larger than the sum of its proper divisors (4048614808435).

20243074042145 is an equidigital number, since it uses as much as digits as its factorization.

20243074042145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4048614808434.

The product of its (nonzero) digits is 215040, while the sum is 38.

The spelling of 20243074042145 in words is "twenty trillion, two hundred forty-three billion, seventy-four million, forty-two thousand, one hundred forty-five".