4020344321011 has 4 divisors (see below), whose sum is σ = 4086251605024. Its totient is φ = 3954437037000.

The previous prime is 4020344320991. The next prime is 4020344321057. The reversal of 4020344321011 is 1101234430204.

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

It is a cyclic number.

It is not a de Polignac number, because 4020344321011 - 2¹⁵ = 4020344288243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4020344321711) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32953641915 + ... + 32953642036.

It is an arithmetic number, because the mean of its divisors is an integer number (1021562901256).

Almost surely, 2^{4020344321011} is an apocalyptic number.

4020344321011 is a deficient number, since it is larger than the sum of its proper divisors (65907284013).

4020344321011 is an equidigital number, since it uses as much as digits as its factorization.

4020344321011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65907284012.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 4020344321011 its reverse (1101234430204), we get a palindrome (5121578751215).

The spelling of 4020344321011 in words is "four trillion, twenty billion, three hundred forty-four million, three hundred twenty-one thousand, eleven".