4440020422451 has 2 divisors, whose sum is σ = 4440020422452. Its totient is φ = 4440020422450.

The previous prime is 4440020422447. The next prime is 4440020422457. The reversal of 4440020422451 is 1542240200444.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4440020422451 - 2² = 4440020422447 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (4440020422457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2220010211225 + 2220010211226.

It is an arithmetic number, because the mean of its divisors is an integer number (2220010211226).

Almost surely, 2^{4440020422451} is an apocalyptic number.

4440020422451 is a deficient number, since it is larger than the sum of its proper divisors (1).

4440020422451 is an equidigital number, since it uses as much as digits as its factorization.

4440020422451 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40960, while the sum is 32.

Adding to 4440020422451 its reverse (1542240200444), we get a palindrome (5982260622895).

The spelling of 4440020422451 in words is "four trillion, four hundred forty billion, twenty million, four hundred twenty-two thousand, four hundred fifty-one".