20343666003541 has 4 divisors (see below), whose sum is σ = 20647302809632. Its totient is φ = 20040029197452.

The previous prime is 20343666003533. The next prime is 20343666003613. The reversal of 20343666003541 is 14530066634302.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20343666003541 - 2³ = 20343666003533 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 (20343666033541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 151818402945 + ... + 151818403078.

It is an arithmetic number, because the mean of its divisors is an integer number (5161825702408).

Almost surely, 2^{20343666003541} is an apocalyptic number.

It is an amenable number.

20343666003541 is a deficient number, since it is larger than the sum of its proper divisors (303636806091).

20343666003541 is an equidigital number, since it uses as much as digits as its factorization.

20343666003541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303636806090.

The product of its (nonzero) digits is 933120, while the sum is 43.

The spelling of 20343666003541 in words is "twenty trillion, three hundred forty-three billion, six hundred sixty-six million, three thousand, five hundred forty-one".