20344246555 has 4 divisors (see below), whose sum is σ = 24413095872. Its totient is φ = 16275397240.

The previous prime is 20344246543. The next prime is 20344246583. The reversal of 20344246555 is 55564244302.

It is a happy number.

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

It is not a de Polignac number, because 20344246555 - 2²¹ = 20342149403 is a prime.

It is a Duffinian number.

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 3 ways as a sum of consecutive naturals, for example, 2034424651 + ... + 2034424660.

It is an arithmetic number, because the mean of its divisors is an integer number (6103273968).

Almost surely, 2^20344246555 is an apocalyptic number.

20344246555 is a deficient number, since it is larger than the sum of its proper divisors (4068849317).

20344246555 is an equidigital number, since it uses as much as digits as its factorization.

20344246555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4068849316.

The product of its (nonzero) digits is 576000, while the sum is 40.

The spelling of 20344246555 in words is "twenty billion, three hundred forty-four million, two hundred forty-six thousand, five hundred fifty-five".