20343653516345 has 16 divisors (see below), whose sum is σ = 24545289600000. Its totient is φ = 16186387428288.

The previous prime is 20343653516311. The next prime is 20343653516363. The reversal of 20343653516345 is 54361535634302.

It is a cyclic number.

It is not a de Polignac number, because 20343653516345 - 2⁸ = 20343653516089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20343653516293 and 20343653516302.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1874330 + ... + 6648339.

It is an arithmetic number, because the mean of its divisors is an integer number (1534080600000).

Almost surely, 2^{20343653516345} is an apocalyptic number.

It is an amenable number.

20343653516345 is a deficient number, since it is larger than the sum of its proper divisors (4201636083655).

20343653516345 is a wasteful number, since it uses less digits than its factorization.

20343653516345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8525272.

The product of its (nonzero) digits is 11664000, while the sum is 50.

The spelling of 20343653516345 in words is "twenty trillion, three hundred forty-three billion, six hundred fifty-three million, five hundred sixteen thousand, three hundred forty-five".