4478860505869 has 2 divisors, whose sum is σ = 4478860505870. Its totient is φ = 4478860505868.

The previous prime is 4478860505839. The next prime is 4478860505881. The reversal of 4478860505869 is 9685050688744.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2592866416644 + 1885994089225 = 1610238^2 + 1373315^2 .

It is a cyclic number.

It is not a de Polignac number, because 4478860505869 - 2¹⁷ = 4478860374797 is a prime.

It is a super-2 number, since 2×4478860505869² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4478860505798 and 4478860505807.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4478860505839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2239430252934 + 2239430252935.

It is an arithmetic number, because the mean of its divisors is an integer number (2239430252935).

Almost surely, 2^{4478860505869} is an apocalyptic number.

It is an amenable number.

4478860505869 is a deficient number, since it is larger than the sum of its proper divisors (1).

4478860505869 is an equidigital number, since it uses as much as digits as its factorization.

4478860505869 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 464486400, while the sum is 70.

The spelling of 4478860505869 in words is "four trillion, four hundred seventy-eight billion, eight hundred sixty million, five hundred five thousand, eight hundred sixty-nine".