4001754855209 has 2 divisors, whose sum is σ = 4001754855210. Its totient is φ = 4001754855208.

The previous prime is 4001754855173. The next prime is 4001754855281. The reversal of 4001754855209 is 9025584571004.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2752456856809 + 1249297998400 = 1659053^2 + 1117720^2 .

It is a cyclic number.

It is not a de Polignac number, because 4001754855209 - 2¹² = 4001754851113 is a prime.

It is not a weakly prime, because it can be changed into another prime (4001754855299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2000877427604 + 2000877427605.

It is an arithmetic number, because the mean of its divisors is an integer number (2000877427605).

Almost surely, 2^{4001754855209} is an apocalyptic number.

It is an amenable number.

4001754855209 is a deficient number, since it is larger than the sum of its proper divisors (1).

4001754855209 is an equidigital number, since it uses as much as digits as its factorization.

4001754855209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016000, while the sum is 50.

The spelling of 4001754855209 in words is "four trillion, one billion, seven hundred fifty-four million, eight hundred fifty-five thousand, two hundred nine".