20345351343 has 16 divisors (see below), whose sum is σ = 27208675200. Its totient is φ = 13522845024.

The previous prime is 20345351311. The next prime is 20345351363. The reversal of 20345351343 is 34315354302.

It is not a de Polignac number, because 20345351343 - 2⁵ = 20345351311 is a prime.

It is a super-2 number, since 2×20345351343² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20345351363) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2053680 + ... + 2063562.

It is an arithmetic number, because the mean of its divisors is an integer number (1700542200).

Almost surely, 2^20345351343 is an apocalyptic number.

20345351343 is a deficient number, since it is larger than the sum of its proper divisors (6863323857).

20345351343 is a wasteful number, since it uses less digits than its factorization.

20345351343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11878.

The product of its (nonzero) digits is 64800, while the sum is 33.

The spelling of 20345351343 in words is "twenty billion, three hundred forty-five million, three hundred fifty-one thousand, three hundred forty-three".