20541040345 has 32 divisors (see below), whose sum is σ = 28855411200. Its totient is φ = 14031420480.

The previous prime is 20541040309. The next prime is 20541040349. The reversal of 20541040345 is 54304014502.

It is not a de Polignac number, because 20541040345 - 2⁷ = 20541040217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20541040349) 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, 428275 + ... + 473815.

It is an arithmetic number, because the mean of its divisors is an integer number (901731600).

Almost surely, 2^20541040345 is an apocalyptic number.

It is an amenable number.

20541040345 is a deficient number, since it is larger than the sum of its proper divisors (8314370855).

20541040345 is an equidigital number, since it uses as much as digits as its factorization.

20541040345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45830 (or 45816 counting only the distinct ones).

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

Adding to 20541040345 its reverse (54304014502), we get a palindrome (74845054847).

The spelling of 20541040345 in words is "twenty billion, five hundred forty-one million, forty thousand, three hundred forty-five".