20005300760257 has 4 divisors (see below), whose sum is σ = 20005318862676. Its totient is φ = 20005282657840.

The previous prime is 20005300760239. The next prime is 20005300760297. The reversal of 20005300760257 is 75206700350002.

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 2252232553536 + 17753068206721 = 1500744^2 + 4213439^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20005300760257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20005300760297) 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, 7277698 + ... + 9642379.

It is an arithmetic number, because the mean of its divisors is an integer number (5001329715669).

Almost surely, 2^{20005300760257} is an apocalyptic number.

It is an amenable number.

20005300760257 is a deficient number, since it is larger than the sum of its proper divisors (18102419).

20005300760257 is a wasteful number, since it uses less digits than its factorization.

20005300760257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18102418.

The product of its (nonzero) digits is 88200, while the sum is 37.

The spelling of 20005300760257 in words is "twenty trillion, five billion, three hundred million, seven hundred sixty thousand, two hundred fifty-seven".