20741255305 has 16 divisors (see below), whose sum is σ = 25336131840. Its totient is φ = 16297158528.

The previous prime is 20741255299. The next prime is 20741255309. The reversal of 20741255305 is 50355214702.

It is a cyclic number.

It is not a de Polignac number, because 20741255305 - 2⁵ = 20741255273 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20741255309) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31647 + ... + 206116.

It is an arithmetic number, because the mean of its divisors is an integer number (1583508240).

Almost surely, 2^20741255305 is an apocalyptic number.

It is an amenable number.

20741255305 is a deficient number, since it is larger than the sum of its proper divisors (4594876535).

20741255305 is a wasteful number, since it uses less digits than its factorization.

20741255305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238080.

The product of its (nonzero) digits is 42000, while the sum is 34.

The spelling of 20741255305 in words is "twenty billion, seven hundred forty-one million, two hundred fifty-five thousand, three hundred five".