20051005240313 has 16 divisors (see below), whose sum is σ = 21859195662864. Its totient is φ = 18315242035200.

The previous prime is 20051005240283. The next prime is 20051005240319. The reversal of 20051005240313 is 31304250015002.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 10387039289449 + 9663965950864 = 3222893^2 + 3108692^2 .

It is a cyclic number.

It is not a de Polignac number, because 20051005240313 - 2⁶ = 20051005240249 is a prime.

It is a super-2 number, since 2×20051005240313² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20051005240319) 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, 39898388 + ... + 40397813.

It is an arithmetic number, because the mean of its divisors is an integer number (1366199728929).

Almost surely, 2^{20051005240313} is an apocalyptic number.

It is an amenable number.

20051005240313 is a deficient number, since it is larger than the sum of its proper divisors (1808190422551).

20051005240313 is a wasteful number, since it uses less digits than its factorization.

20051005240313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80296652.

The product of its (nonzero) digits is 3600, while the sum is 26.

Adding to 20051005240313 its reverse (31304250015002), we get a palindrome (51355255255315).

The spelling of 20051005240313 in words is "twenty trillion, fifty-one billion, five million, two hundred forty thousand, three hundred thirteen".