20540706041 has 4 divisors (see below), whose sum is σ = 20595775332. Its totient is φ = 20485636752.

The previous prime is 20540706019. The next prime is 20540706083. The reversal of 20540706041 is 14060704502.

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 12943840441 + 7596865600 = 113771^2 + 87160^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20540706041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20540705995 and 20540706013.

It is not an unprimeable number, because it can be changed into a prime (20540706001) 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, 27534086 + ... + 27534831.

It is an arithmetic number, because the mean of its divisors is an integer number (5148943833).

Almost surely, 2^20540706041 is an apocalyptic number.

It is an amenable number.

20540706041 is a deficient number, since it is larger than the sum of its proper divisors (55069291).

20540706041 is an equidigital number, since it uses as much as digits as its factorization.

20540706041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55069290.

The product of its (nonzero) digits is 6720, while the sum is 29.

The spelling of 20540706041 in words is "twenty billion, five hundred forty million, seven hundred six thousand, forty-one".