4978911617 has 2 divisors, whose sum is σ = 4978911618. Its totient is φ = 4978911616.

The previous prime is 4978911593. The next prime is 4978911631. The reversal of 4978911617 is 7161198794.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4513689856 + 465221761 = 67184^2 + 21569^2 .

It is a cyclic number.

It is not a de Polignac number, because 4978911617 - 2¹⁰ = 4978910593 is a prime.

It is not a weakly prime, because it can be changed into another prime (4978911667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2489455808 + 2489455809.

It is an arithmetic number, because the mean of its divisors is an integer number (2489455809).

Almost surely, 2^4978911617 is an apocalyptic number.

It is an amenable number.

4978911617 is a deficient number, since it is larger than the sum of its proper divisors (1).

4978911617 is an equidigital number, since it uses as much as digits as its factorization.

4978911617 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 762048, while the sum is 53.

The square root of 4978911617 is about 70561.4031677375. The cubic root of 4978911617 is about 1707.5685170656.

The spelling of 4978911617 in words is "four billion, nine hundred seventy-eight million, nine hundred eleven thousand, six hundred seventeen".