20102345113243 has 8 divisors (see below), whose sum is σ = 20627727407280. Its totient is φ = 19578633352320.

The previous prime is 20102345113241. The next prime is 20102345113247. The reversal of 20102345113243 is 34231154320102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20102345113243 - 2¹ = 20102345113241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20102345113241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 417608898 + ... + 417657031.

It is an arithmetic number, because the mean of its divisors is an integer number (2578465925910).

Almost surely, 2^{20102345113243} is an apocalyptic number.

20102345113243 is a deficient number, since it is larger than the sum of its proper divisors (525382294037).

20102345113243 is an equidigital number, since it uses as much as digits as its factorization.

20102345113243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 835266557.

The product of its (nonzero) digits is 17280, while the sum is 31.

Adding to 20102345113243 its reverse (34231154320102), we get a palindrome (54333499433345).

The spelling of 20102345113243 in words is "twenty trillion, one hundred two billion, three hundred forty-five million, one hundred thirteen thousand, two hundred forty-three".