20613142264613 has 2 divisors, whose sum is σ = 20613142264614. Its totient is φ = 20613142264612.

The previous prime is 20613142264601. The next prime is 20613142264651. The reversal of 20613142264613 is 31646224131602.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17666402672164 + 2946739592449 = 4203142^2 + 1716607^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20613142264613 is a prime.

It is a super-2 number, since 2×20613142264613² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20613142234613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10306571132306 + 10306571132307.

It is an arithmetic number, because the mean of its divisors is an integer number (10306571132307).

Almost surely, 2^{20613142264613} is an apocalyptic number.

It is an amenable number.

20613142264613 is a deficient number, since it is larger than the sum of its proper divisors (1).

20613142264613 is an equidigital number, since it uses as much as digits as its factorization.

20613142264613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 248832, while the sum is 41.

The spelling of 20613142264613 in words is "twenty trillion, six hundred thirteen billion, one hundred forty-two million, two hundred sixty-four thousand, six hundred thirteen".