20523745192297 has 4 divisors (see below), whose sum is σ = 20550714634836. Its totient is φ = 20496775749760.

The previous prime is 20523745192289. The next prime is 20523745192319. The reversal of 20523745192297 is 79229154732502.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9316388780176 + 11207356412121 = 3052276^2 + 3347739^2 .

It is a cyclic number.

It is not a de Polignac number, because 20523745192297 - 2³ = 20523745192289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20523745192207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13484720128 + ... + 13484721649.

It is an arithmetic number, because the mean of its divisors is an integer number (5137678658709).

Almost surely, 2^{20523745192297} is an apocalyptic number.

It is an amenable number.

20523745192297 is a deficient number, since it is larger than the sum of its proper divisors (26969442539).

20523745192297 is an equidigital number, since it uses as much as digits as its factorization.

20523745192297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26969442538.

The product of its (nonzero) digits is 19051200, while the sum is 58.

The spelling of 20523745192297 in words is "twenty trillion, five hundred twenty-three billion, seven hundred forty-five million, one hundred ninety-two thousand, two hundred ninety-seven".