20345548801 has 4 divisors (see below), whose sum is σ = 20348520192. Its totient is φ = 20342577412.

The previous prime is 20345548753. The next prime is 20345548871. The reversal of 20345548801 is 10884554302.

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, and also an emirpimes, since its reverse is a distinct semiprime: 10884554302 = 2 ⋅5442277151.

It is a cyclic number.

It is not a de Polignac number, because 20345548801 - 2³³ = 11755614209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20345548871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1475401 + ... + 1489126.

It is an arithmetic number, because the mean of its divisors is an integer number (5087130048).

Almost surely, 2^20345548801 is an apocalyptic number.

It is an amenable number.

20345548801 is a deficient number, since it is larger than the sum of its proper divisors (2971391).

20345548801 is an equidigital number, since it uses as much as digits as its factorization.

20345548801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2971390.

The product of its (nonzero) digits is 153600, while the sum is 40.

The spelling of 20345548801 in words is "twenty billion, three hundred forty-five million, five hundred forty-eight thousand, eight hundred one".