20523252758279 has 2 divisors, whose sum is σ = 20523252758280. Its totient is φ = 20523252758278.

The previous prime is 20523252758273. The next prime is 20523252758317. The reversal of 20523252758279 is 97285725232502.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20523252758279 - 2¹² = 20523252754183 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20523252758273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10261626379139 + 10261626379140.

It is an arithmetic number, because the mean of its divisors is an integer number (10261626379140).

Almost surely, 2^{20523252758279} is an apocalyptic number.

20523252758279 is a deficient number, since it is larger than the sum of its proper divisors (1).

20523252758279 is an equidigital number, since it uses as much as digits as its factorization.

20523252758279 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42336000, while the sum is 59.

The spelling of 20523252758279 in words is "twenty trillion, five hundred twenty-three billion, two hundred fifty-two million, seven hundred fifty-eight thousand, two hundred seventy-nine".