20523230652709 has 2 divisors, whose sum is σ = 20523230652710. Its totient is φ = 20523230652708.

The previous prime is 20523230652703. The next prime is 20523230652737. The reversal of 20523230652709 is 90725603232502.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20397597976900 + 125632675809 = 4516370^2 + 354447^2 .

It is a cyclic number.

It is not a de Polignac number, because 20523230652709 - 2⁷ = 20523230652581 is a prime.

It is a super-3 number, since 3×20523230652709³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20523230652703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10261615326354 + 10261615326355.

It is an arithmetic number, because the mean of its divisors is an integer number (10261615326355).

Almost surely, 2^{20523230652709} is an apocalyptic number.

It is an amenable number.

20523230652709 is a deficient number, since it is larger than the sum of its proper divisors (1).

20523230652709 is an equidigital number, since it uses as much as digits as its factorization.

20523230652709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1360800, while the sum is 46.

The spelling of 20523230652709 in words is "twenty trillion, five hundred twenty-three billion, two hundred thirty million, six hundred fifty-two thousand, seven hundred nine".