4374778444447 has 2 divisors, whose sum is σ = 4374778444448. Its totient is φ = 4374778444446.

The previous prime is 4374778444433. The next prime is 4374778444481. The reversal of 4374778444447 is 7444448774734.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4374778444447 - 2⁷ = 4374778444319 is a prime.

It is a super-2 number, since 2×4374778444447² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4374778444847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2187389222223 + 2187389222224.

It is an arithmetic number, because the mean of its divisors is an integer number (2187389222224).

Almost surely, 2^{4374778444447} is an apocalyptic number.

4374778444447 is a deficient number, since it is larger than the sum of its proper divisors (1).

4374778444447 is an equidigital number, since it uses as much as digits as its factorization.

4374778444447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 944111616, while the sum is 67.

The spelling of 4374778444447 in words is "four trillion, three hundred seventy-four billion, seven hundred seventy-eight million, four hundred forty-four thousand, four hundred forty-seven".