20713125269 has 2 divisors, whose sum is σ = 20713125270. Its totient is φ = 20713125268.

The previous prime is 20713125263. The next prime is 20713125283. The reversal of 20713125269 is 96252131702.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18703844644 + 2009280625 = 136762^2 + 44825^2 .

It is a cyclic number.

It is not a de Polignac number, because 20713125269 - 2¹² = 20713121173 is a prime.

It is a super-2 number, since 2×20713125269² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20713125263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10356562634 + 10356562635.

It is an arithmetic number, because the mean of its divisors is an integer number (10356562635).

Almost surely, 2^20713125269 is an apocalyptic number.

It is an amenable number.

20713125269 is a deficient number, since it is larger than the sum of its proper divisors (1).

20713125269 is an equidigital number, since it uses as much as digits as its factorization.

20713125269 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45360, while the sum is 38.

The spelling of 20713125269 in words is "twenty billion, seven hundred thirteen million, one hundred twenty-five thousand, two hundred sixty-nine".