4374778444481 has 2 divisors, whose sum is σ = 4374778444482. Its totient is φ = 4374778444480.

The previous prime is 4374778444447. The next prime is 4374778444513. The reversal of 4374778444481 is 1844448774734.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2502752476081 + 1872025968400 = 1582009^2 + 1368220^2 .

It is a cyclic number.

It is not a de Polignac number, because 4374778444481 - 2²² = 4374774250177 is a prime.

It is a super-2 number, since 2×4374778444481² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (4374778444411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2187389222240 + 2187389222241.

It is an arithmetic number, because the mean of its divisors is an integer number (2187389222241).

Almost surely, 2^{4374778444481} is an apocalyptic number.

It is an amenable number.

4374778444481 is a deficient number, since it is larger than the sum of its proper divisors (1).

4374778444481 is an equidigital number, since it uses as much as digits as its factorization.

4374778444481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 269746176, while the sum is 65.

The spelling of 4374778444481 in words is "four trillion, three hundred seventy-four billion, seven hundred seventy-eight million, four hundred forty-four thousand, four hundred eighty-one".