20231020040545 has 32 divisors (see below), whose sum is σ = 26984236631040. Its totient is φ = 14491534264320.

The previous prime is 20231020040537. The next prime is 20231020040549. The reversal of 20231020040545 is 54504002013202.

It is not a de Polignac number, because 20231020040545 - 2³ = 20231020040537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20231020040549) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 64910692 + ... + 65221621.

It is an arithmetic number, because the mean of its divisors is an integer number (843257394720).

Almost surely, 2^{20231020040545} is an apocalyptic number.

It is an amenable number.

20231020040545 is a deficient number, since it is larger than the sum of its proper divisors (6753216590495).

20231020040545 is a wasteful number, since it uses less digits than its factorization.

20231020040545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130132425.

The product of its (nonzero) digits is 9600, while the sum is 28.

Adding to 20231020040545 its reverse (54504002013202), we get a palindrome (74735022053747).

The spelling of 20231020040545 in words is "twenty trillion, two hundred thirty-one billion, twenty million, forty thousand, five hundred forty-five".