20326156343 has 4 divisors (see below), whose sum is σ = 20330219280. Its totient is φ = 20322093408.

The previous prime is 20326156303. The next prime is 20326156381. The reversal of 20326156343 is 34365162302.

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

It is a cyclic number.

It is not a de Polignac number, because 20326156343 - 2²² = 20321962039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20326156303) 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, 2023955 + ... + 2033972.

It is an arithmetic number, because the mean of its divisors is an integer number (5082554820).

Almost surely, 2^20326156343 is an apocalyptic number.

20326156343 is a deficient number, since it is larger than the sum of its proper divisors (4062937).

20326156343 is an equidigital number, since it uses as much as digits as its factorization.

20326156343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4062936.

The product of its (nonzero) digits is 77760, while the sum is 35.

The spelling of 20326156343 in words is "twenty billion, three hundred twenty-six million, one hundred fifty-six thousand, three hundred forty-three".